Francisco Santiago Sierra Ledezma (born December 28, 1987) is a Mexican professional boxer.
Sierra lost a by knockout to Edison Miranda at Tachi Palace Hotel & Casino in Lemoore, California for the interim WBO NABO super middleweight title on October 22, 2009.
Panchito upset the return of former WBO World Champion Jose Luis Lopez in a 6 round TKO.
On July 30, 2009, Sierra won undefeated Super Middleweight contender, Don George (20-0-1, 17KOâÂÂs) by Technical Decision at the Buffalo Run Casino, Miami, Oklahoma for the vacant WBO NABO super middleweight title. George went down once in the 7 round. Sierra went on to win on points but, because he had struck him after the bell had rung he was docked two points.