San Francisco, CA Welterweight and promoter, Karim “Hard Hitta” Mayfield will return in his second promotional event in San Francisco, CA at the Fairmont Hotel as Hard Hitta Promotions along with Humboldt Boxing in association with Roy Engelbrecht will return with the aforementioned Mayfield headlining the card at San Francisco’s

Boxing makes its return to San Francisco, CA when Humboldt Boxing and Karim Mayfield’s (17-4-1 11KOs) Hard Hitta Promotions promote “Back to Business”, a card headlined by the aforementioned Mayfield at the SF Armory (1800 Mission St, San Francisco, CA 94103). Mayfield, a San Francisco legend in and out of