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|Real name||Karim Rasheed Mayfield|
|Height||5 ft 7 in (170 cm)|
|Reach||66 in (168 cm)|
|Born||December 14, 1980|
San Francisco, U.S.
|Wins by KO||11|
Mayfield was born and raised in San Francisco and grew up in the historic Fillmore District. He has three brothers and two sisters. His mother is an entrepreneur while his father is an electrician.
Karim Mayfield has fought 58 amateur fights altogether with a record of 54-4. He won the 2006 Golden Gloves in San Francisco at the historic Civic Center Auditorium in San Francisco. Mayfield also won the Bronze medal in the Western Trials for the 2004 Olympics.
Mayfield was a football player, running back, in school and discovered boxing at a relatively late age when he was 20 years old. There was a local gym around his neighborhood that had just opened and he decided to go check it out. Mayfield ended up sparring with an amateur boxer who had been boxing for a year and did extremely well. That inspired and motivated Mayfield to take up Boxing professionally. Mayfield is trained by Ben Bautista.
Mayfield first won the Vacant NABO Jr. Welterweight on October 1, 2011 in Tunica, Mississippi, via a 10 round unanimous decision against lefthanded former two-time Venezuelan Olympian Patrick Lopez (20-4).
On June 20, 2015 Floyd Mayweather Jr told ESPN Boxing reporter Dan Rafael that he was going to fight either Karim Mayfield or Andre Berto next. Most boxing scribes did not take this seriously, but Mayweather insisted that he was not joking, stating "Pacquiao fought (Chris) Algieri, so why not?"
|21 Wins (11 knockouts, 10 decisions), 5 Losses (0 knockouts, 5 decisions), 1 Draw|
|Loss||21-5-1||Sergey Lubkovich||MD||10||2018-04-27||KFC Yum! Center, Louisville|
|Win||21-4-1||Gaku Takahashi||UD||8||2018-04-07||Fairmont Hotel, San Francisco|
|Win||20-4-1||Miguel Dumas||UD||6||2017-10-21||Armory, San Francisco|
|Loss||19-4-1||Bakhtiyar Eyubov||SD||10||2016-08-19||Rhinos Stadium, Rochester, New York|
|Loss||19-3-1||Dmitry Mikhaylenko||UD||10||2016-01-30||Bell Centre, Montreal|
|Win||19-2-1||Michael Balasi||UD||8||2014-11-08||Longshoremen's Hall, San Francisco|
|Loss||18-2-1||Emmanuel Taylor||UD||10||2014-07-18||Paramount Theatre, Huntington, New York|
|Loss||18-1-1||Thomas Dulorme||UD||10||2014-03-29||The Ballroom, Boardwalk Hall, Atlantic City, New Jersey||For WBO NABF Welterweight title.|
|Win||17-0-1||Mauricio Herrera||UD||10||2012-10-27||Turning Stone Resort & Casino, Verona, New York||Retained WBO NABO Welterweight title.|
|Win||16-0-1||Raymond Serrano||TKO||5,0:47||2012-05-18||Times Union Center, Albany, New York||Retained WBO NABO Welterweight title.|
|Win||15-0-1||Patrick Lopez||UD||10||2011-10-01||Fitzgerald's Casino & Hotel, Tunica, Mississippi||Won WBO NABO Welterweight title.|
|Win||14-0-1||Stevie Forbes||TKO||10,1:03||2011-06-17||Frank Erwin Center, Austin, Texas|
|Win||13-0-1||Sergio Joel De La Torre||TKO||5,3:00||2010-06-12||Kezar Pavilion, San Francisco|
|Win||12-0-1||Mario Ramos||MD||6||2010-06-12||Grand Sierra Resort, Reno, Nevada|
|Win||11-0-1||Francisco Santana||TKO||5,2:27||2009-11-21||Oracle Arena, Oakland, California|
|Win||10-0-1||Joshua Rentería||UD||6||2009-08-14||Desert Diamond Casino, Tucson, Arizona|
|Win||9-0-1||Roberto Valenzuela||TKO||2,1:12||2009-05-16||Oracle Arena, Oakland, California|
|Win||8-0-1||Mario Alberto Lozano||UD||6||2009-03-07||HP Pavilion, San Jose, California|
|Win||7-0-1||Trenton Titsworth||UD||4||2008-11-20||HP Pavilion, San Jose, California|
|Win||6-0-1||Francisco Santana||SD||6||2008-03-20||HP Pavilion, San Jose, California|
|Win||5-0-1||Rahman Yusubov||TKO||2,2:47||2007-10-03||Sears Centre, Hoffman Estates, Illinois|
|Win||4-0-1||Alejo Sepulveda||TKO||1,2:46||2007-08-06||Sports Arena, Los Angeles|
|Win||3-0-1||Ricardo Galindo||TKO||4,1:56||2007-07-19||Marriott Hotel, Irvine, California|
|Draw||2-0-1||Jorge Alberto Padilla||TD||2,3:00||2007-05-24||HP Pavilion, San Jose, California||Padilla was cut by an accidental headbutt|
|Win||2-0-0||Salvador Lopez||TKO||3,2:29||2006-11-16||HP Pavilion, San Jose, California|
|Win||1-0-0||Chris Mickle||TKO||1,1:00||2006-11-16||Oakland Arena, Oakland, California||Professional debut|
- Dan Rafael [@danrafaelespn] (21 June 2015). "Floyd said he'll fight Berto or Mayfield next. I asked if he was kidding. He seemed to be serious. Said Pacquiao fought Algieri so why not?" (Tweet) – via Twitter.