diff --git a/EntityFrameworkCore.Data/Migrations/20250407092002_AddOneToOneRelationshipCoachTeam.Designer.cs b/EntityFrameworkCore.Data/Migrations/20250407092002_AddOneToOneRelationshipCoachTeam.Designer.cs
new file mode 100644
index 0000000..8834c7c
--- /dev/null
+++ b/EntityFrameworkCore.Data/Migrations/20250407092002_AddOneToOneRelationshipCoachTeam.Designer.cs
@@ -0,0 +1,368 @@
+// <auto-generated />
+using System;
+using EntityFrameworkCore.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace EntityFrameworkCore.Data.Migrations
+{
+    [DbContext(typeof(DeadBallZoneLeagueDbContext))]
+    [Migration("20250407092002_AddOneToOneRelationshipCoachTeam")]
+    partial class AddOneToOneRelationshipCoachTeam
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "9.0.3");
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Coaches");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Leagues");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Local League"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "National League"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Geosphere"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Cyber war"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AwayTeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AwayTeamScore")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("HomeTeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("HomeTeamScore")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<decimal>("TicketPrice")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AwayTeamId");
+
+                    b.HasIndex("HomeTeamId");
+
+                    b.ToTable("Matches");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("CoachId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("LeagueId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CoachId")
+                        .IsUnique();
+
+                    b.HasIndex("LeagueId");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("Teams");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Delhi"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Voodoo"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Penal X"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Tokyo"
+                        },
+                        new
+                        {
+                            Id = 5,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Barcelona"
+                        },
+                        new
+                        {
+                            Id = 6,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Manchester"
+                        },
+                        new
+                        {
+                            Id = 7,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Bangkok"
+                        },
+                        new
+                        {
+                            Id = 8,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Amsterdam"
+                        },
+                        new
+                        {
+                            Id = 9,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Killaklowns"
+                        },
+                        new
+                        {
+                            Id = 10,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Sol"
+                        },
+                        new
+                        {
+                            Id = 11,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "DEC"
+                        },
+                        new
+                        {
+                            Id = 12,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Leopards"
+                        },
+                        new
+                        {
+                            Id = 13,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Harlequins"
+                        },
+                        new
+                        {
+                            Id = 14,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Gladiators"
+                        },
+                        new
+                        {
+                            Id = 15,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Fiz-O"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
+                {
+                    b.HasOne("EntityFrameworkCore.Domain.Team", "AwayTeam")
+                        .WithMany("AwayMatches")
+                        .HasForeignKey("AwayTeamId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("EntityFrameworkCore.Domain.Team", "HomeTeam")
+                        .WithMany("HomeMatches")
+                        .HasForeignKey("HomeTeamId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("AwayTeam");
+
+                    b.Navigation("HomeTeam");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.HasOne("EntityFrameworkCore.Domain.Coach", "Coach")
+                        .WithOne("Team")
+                        .HasForeignKey("EntityFrameworkCore.Domain.Team", "CoachId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("EntityFrameworkCore.Domain.League", "League")
+                        .WithMany("Teams")
+                        .HasForeignKey("LeagueId");
+
+                    b.Navigation("Coach");
+
+                    b.Navigation("League");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Navigation("Team");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
+                {
+                    b.Navigation("Teams");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.Navigation("AwayMatches");
+
+                    b.Navigation("HomeMatches");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/EntityFrameworkCore.Data/Migrations/20250407092002_AddOneToOneRelationshipCoachTeam.cs b/EntityFrameworkCore.Data/Migrations/20250407092002_AddOneToOneRelationshipCoachTeam.cs
new file mode 100644
index 0000000..4185328
--- /dev/null
+++ b/EntityFrameworkCore.Data/Migrations/20250407092002_AddOneToOneRelationshipCoachTeam.cs
@@ -0,0 +1,50 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace EntityFrameworkCore.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddOneToOneRelationshipCoachTeam : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "TeamId",
+                table: "Coaches");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Teams_CoachId",
+                table: "Teams",
+                column: "CoachId",
+                unique: true);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Teams_Coaches_CoachId",
+                table: "Teams",
+                column: "CoachId",
+                principalTable: "Coaches",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Teams_Coaches_CoachId",
+                table: "Teams");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Teams_CoachId",
+                table: "Teams");
+
+            migrationBuilder.AddColumn<int>(
+                name: "TeamId",
+                table: "Coaches",
+                type: "INTEGER",
+                nullable: true);
+        }
+    }
+}
diff --git a/EntityFrameworkCore.Data/Migrations/DeadBallZoneLeagueDbContextModelSnapshot.cs b/EntityFrameworkCore.Data/Migrations/DeadBallZoneLeagueDbContextModelSnapshot.cs
index b9735ee..feb1316 100644
--- a/EntityFrameworkCore.Data/Migrations/DeadBallZoneLeagueDbContextModelSnapshot.cs
+++ b/EntityFrameworkCore.Data/Migrations/DeadBallZoneLeagueDbContextModelSnapshot.cs
@@ -39,9 +39,6 @@ namespace EntityFrameworkCore.Data.Migrations
                         .IsRequired()
                         .HasColumnType("TEXT");
 
-                    b.Property<int?>("TeamId")
-                        .HasColumnType("INTEGER");
-
                     b.HasKey("Id");
 
                     b.ToTable("Coaches");
@@ -177,6 +174,9 @@ namespace EntityFrameworkCore.Data.Migrations
 
                     b.HasKey("Id");
 
+                    b.HasIndex("CoachId")
+                        .IsUnique();
+
                     b.HasIndex("LeagueId");
 
                     b.HasIndex("Name")
@@ -328,13 +328,26 @@ namespace EntityFrameworkCore.Data.Migrations
 
             modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
                 {
+                    b.HasOne("EntityFrameworkCore.Domain.Coach", "Coach")
+                        .WithOne("Team")
+                        .HasForeignKey("EntityFrameworkCore.Domain.Team", "CoachId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
                     b.HasOne("EntityFrameworkCore.Domain.League", "League")
                         .WithMany("Teams")
                         .HasForeignKey("LeagueId");
 
+                    b.Navigation("Coach");
+
                     b.Navigation("League");
                 });
 
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Navigation("Team");
+                });
+
             modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
                 {
                     b.Navigation("Teams");