Ritchie De Laet wore jersey number 30 for mancunian republic in 2010-2011.
Only Isaiah Rider wore 34 for the Blazers
In 2002, George Lombard wore #30 for the Detroit Tigers. Kris Keller also wore the #30 for one game on May 24th.
Terrell Davis wore he Number 30, the fourth man in history to rush for 2,000 yards in a season.
Sean Landeta
Tim Thomas wore number 70 in 2003 for the Bruins. He has worn 30 for the team since the 2005-06 season.
Panos Bountoulousis who plays for Seaquam Seahawks
Mike Brown, player for the Chicago Bears, jersey number is #30.
the new york giants 30(nyg) to 13(Chicago)
Lionel Messi in his early years with Barca
Casey Stengel wore #37 as manager of the Yankees and Mets. His MLB playing career ended before players started wearing numbers on their jersey.
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.