Kansas City Royals call up 45-year-old Rich Hill, making him MLB's oldest active player.

The Kansas City Royals have called up 45-year-old left-handed pitcher Rich Hill for his 21st season in Major League Baseball, making him the oldest active player. Hill, who has played for 14 different teams throughout his career, signed a minor league contract with the Royals in May. His addition comes as the Royals deal with injuries to other pitchers. The Royals are currently 12 games behind the Detroit Tigers in their division.