Fritz Knapp and Steve McNamee were athletes as students at the College of William and Mary. On a recent Saturday afternoon, their competitive instincts came out during a game of basketball with three children—Brandon Mom, 13, and his sisters Kapre, 12, and Cierra, 10—at McNamee’s home in Henrico County. “Cover your brother,“ McNamee called to the girls repeatedly with playful bravado. “Cover him like a cheap suit.“