CREATE TABLE [dbo].[Players] (
[Id]       INT        NOT NULL,
[Name]     NCHAR (50) NOT NULL,
[Age]      INT        NOT NULL,
[Position] NCHAR (50) NOT NULL,
[TeamId]   INT        NULL,
PRIMARY KEY CLUSTERED ([Id] ASC),
CONSTRAINT [FK_Players_Teams] FOREIGN KEY ([TeamId]) REFERENCES [dbo].[Teams] ([Id]) ON DELETE SET NULL