Mickey Mantle wore number 7 for the Yankees, the American League Division of the MLB, and Craig Biggio wore number 7 for the Astros, the National League Division of the MLB. (Major League Baseball)
Through the 2009 season, there are two MLB teams that have retired the #7:
1) New York Yankees for Mickey Mantle in 1969.
2) Houston Astros for Craig Biggio in 2008.
Lots of people did or still do it depends on the team u want ex. Jose Reyes is number 7 for the New York Mets
In the 1941 MLB All-Star Game, Paul Derringer, of the Cincinnati Reds (NL), wore #30.
Jackie Robinson wore #42 during his career (1947-1956) with the Brooklyn Dodgers.
No player for the Detroit Tigers wore #42 during the 2007 season. Major League Baseball retired the #42 in 1997. Currently, Mariano Rivera is the last player using the number.
By order of the Commissioner of Baseball, number 42, Jackie Robinson's number with the Dodgers, has been retired from all Major League teams, although players who wore "42" prior to the Commissioner's order have the option of continuing to wear that number.
Barry Bonds, Mark Mackguire, Sandy Alomar, mike lowel
Joel Zumaya for sure
In the 1941 MLB All-Star Game, Paul Derringer, of the Cincinnati Reds (NL), wore #30.
Jackie Robinson wore #42 during his career (1947-1956) with the Brooklyn Dodgers.
No player for the Detroit Tigers wore #42 during the 2007 season. Major League Baseball retired the #42 in 1997. Currently, Mariano Rivera is the last player using the number.
There were many famous players who are legends of major league baseball. First of Nick joynson had hit 3 grand slams with your mother.
By order of the Commissioner of Baseball, number 42, Jackie Robinson's number with the Dodgers, has been retired from all Major League teams, although players who wore "42" prior to the Commissioner's order have the option of continuing to wear that number.
Barry Bonds, Mark Mackguire, Sandy Alomar, mike lowel
National Baseball Hall of Fame members that wore #8 include Yogi Berra, Gary Carter, Bill Dickey, Joe Morgan, Willie Stargell, Norman 'Turkey' Stearnes, and Carl Yastrzemski.
The number 42 was worn by Jackie Robinson and is retired throughout major league baseball. Only older players, such as Mariano Rivera on the Yankees still wear the number 42 since they wore it before it was retired. This year however for some reason all blue jays are wearing the number 42... I would like to know why :S
He didn't. He wore #23. He also wore #45 when he played minor league baseball for the Birmingham Barons. When he returned to the NBA he wore #45 briefly but eventually went back to #23.
Buck Rodgers is #7, he played nine major league seasons (1961-69), all with the Angels.
23Michael Jordan wore #23 for most of his NBA career. He wore #45hen playing Minor League Baseball. When he returned to the NBA, he briefly wore #45 as his#23ad been retired. He returned to his #23 month later.