In July 1987, the Orioles released Rick Burleson and called Ripken up to replace him. He debuted on July 11, creating the first instance in baseball history in which a father managed two sons on the same major league team, as his father was the Orioles' manager and his brother was their shortstop. While with the Orioles, Ripken played alongside his brother, Cal Ripken, Jr.; he was managed by his father, Cal, Sr., from 1987–1988. Billy did not have a hit in his debut but picked up his first hit as one of two against Charlie Leibrandt of the Kansas City Royals on July 16. Three days later, Ripken hit his first home run against Bud Black, helping the Orioles defeat Kansas City 5–1. Expected to be more of a fielder than a hitter, Ripken finished his inaugural season with a .308 batting average, two home runs, and 72 hits in 58 games.