William Oliver Ripken, nicknamed "Billy the Kid", is an American former professional baseball infielder. He played in Major League Baseball (MLB) from 1987–1998 for the Baltimore Orioles, Texas Rangers, Cleveland Indians (1995), and Detroit Tigers (1998). During his career, he batted and threw right-handed. He is the younger brother of Hall of Famer Cal Ripken Jr. He currently serves as a radio host for XM Satellite Radio and a studio analyst for MLB Network.

Calvin Edwin Ripken Jr., nicknamed "the Iron Man", is an American former baseball shortstop and third baseman who played his entire 21-season career in Major League Baseball (MLB) for the Baltimore Orioles (1981–2001). One of his position's most productive offensive players, Ripken compiled 3,184 hits, 431 home runs, and 1,695 runs batted in during his career, and he won two Gold Glove Awards for his defense. He was a 19-time All-Star and was twice named American League (AL) Most Valuable Player (MVP). Ripken holds the record for consecutive games played (2,632), having surpassed Lou Gehrig's streak of 2,130 that had stood for 56 years and that many deemed unbreakable. In 2007, he was elected to the National Baseball Hall of Fame in his first year of eligibility with 98.53% of votes, the sixth-highest election percentage ever.