Mark Breland underwent surgery on his left...

Mark Breland underwent surgery on his left hand, which he broke in the first round of his World Boxing Assn. welterweight title defense Feb. 6.

Kathy Duva, a spokeswoman for Main Event, which promotes Breland, said that Dr. Martin Posner reattached tendons over the middle knuckle of the hand and placed a cast on the fourth metacarpal bone. The operation took place at Lenox Hill Hospital.

Breland won the bout with a seventh-round knockout over Harold Volbrecht of South Africa at Atlantic City, N.J.