diff --git a/EntityFrameworkCore.Domain/Coach.cs b/EntityFrameworkCore.Domain/Coach.cs
index f95e32e..b35c6b4 100644
--- a/EntityFrameworkCore.Domain/Coach.cs
+++ b/EntityFrameworkCore.Domain/Coach.cs
@@ -3,5 +3,6 @@
 public class Coach : BaseDomainModel
 {
   public string Name { get; set; } // Strings are automatically become VARCHAR database types.
+  public int? TeamId { get; set; }
 }