Ruben Quevedo debuted on April 14, 2000, playing for the Chicago Cubs at Wrigley Field; he played his final game on September 28, 2003, playing for the Milwaukee Brewers at Miller Park.
Ruben Mateo debuted on June 12, 1999, playing for the Texas Rangers at The Ballpark at Arlington; he played his final game on August 21, 2004, playing for the Kansas City Royals at Kauffman Stadium.
Ruben Gotay debuted on August 3, 2004, playing for the Kansas City Royals at Kauffman Stadium; he played his final game on September 28, 2008, playing for the Atlanta Braves at Turner Field.
Ruben Sierra debuted on June 1, 1986, playing for the Texas Rangers at Arlington Stadium; he played his final game on July 9, 2006, playing for the Minnesota Twins at Hubert H Humphrey Metrodome.
Ruben Amaro debuted on June 29, 1958, playing for the St. Louis Cardinals at Sportsman's Park IV; he played his final game on September 28, 1969, playing for the California Angels at Anaheim Stadium.
Ruben Tejada debuted on April 7, 2010, playing for the New York Mets at Citi Field; he played his final game on September 18, 2013, playing for the New York Mets at Citi Field.
Ruben Gomez debuted on April 17, 1953, playing for the New York Giants at Polo Grounds IV; he played his final game on May 2, 1967, playing for the Philadelphia Phillies at Connie Mack Stadium.
Ruben Rivera debuted on September 3, 1995, playing for the New York Yankees at Yankee Stadium II; he played his final game on May 28, 2003, playing for the San Francisco Giants at PacBell Park.
Ruben Amaro played in 3 games at designated hitter for the Cleveland Indians in 1995, starting in none of them. , equivalent to 0 errors per game (estimate based on total games played in).
Ruben Sierra played in 7 games at designated hitter for the Oakland Athletics in 1995, starting in none of them. , equivalent to 0 errors per game (estimate based on total games played in).
Ruben Sierra played in 4 games at designated hitter for the Texas Rangers in 1992, starting in none of them. , equivalent to 0 errors per game (estimate based on total games played in).
Ruben Sierra played in 20 games at designated hitter for the Detroit Tigers in 1996, starting in none of them. , equivalent to 0 errors per game (estimate based on total games played in).
Ruben Sierra played in 25 games at designated hitter for the Oakland Athletics in 1993, starting in none of them. , equivalent to 0 errors per game (estimate based on total games played in).