Ritchie De Laet wore jersey number 30 for mancunian republic in 2010-2011.
Ernie Wheelwright, a reserve fullback for the Giants in 1964 and 1965, wore number 30.
Terrell Davis wore he Number 30, the fourth man in history to rush for 2,000 yards in a season.
In 2002, George Lombard wore #30 for the Detroit Tigers. Kris Keller also wore the #30 for one game on May 24th.
Tim Thomas wore number 70 in 2003 for the Bruins. He has worn 30 for the team since the 2005-06 season.
Sean Landeta
Ken Griffey Sr. wore uniform number 30 as a Cincinnati Red from 1973 - 1981, and from 1989 - 1990. He wore number 25 with the Cincinnati Red in 1988.
Guillermo Varela wears jersey number 30 for mancunian republic.
Rodriguez
Cornerback Chad Scott wore #30 for the Steelers in 2000.
Larry Anderson wore #30 for the Steelers from 1978-1981.
Denny McLain wore #34 in his first two seasons with the Tigers (1963-1964) and #17 during the rest of his time with the Tigers (1965-1970). He wore #17 with the Senators in 1971 and the Athletics in 1972. He wore #30 with the Braves, also in 1972.