According to the Las Vegas Review Journal, junior welterweight contender Joan Guzman has tested positive for Furosemide, a diuretic banned in Nevada. According to the article the Dominican tested positive after his fight versus Jason Davis on the Amir Khan-Marcos Maidana undercard this past December read more ...

WBA interim super lightweight champion Marcos Maidana (28-1, 27 KOs) scored a sixth round KO over previously unbeaten Victor Cayo (24-1, 15 KOs) on Saturday night in “The Joint” at the Hard Rock Hotel & Casino in Las Vegas. Maidana dropped Cayo at the end of round two, then continued to break down Cayo, finishing him with a body shot at 1:38 of the sixth round read more ...

The 6’1” Funeka appeared to have won the vacant IBF lightweight title behind his jab, outlanding Guzman 142-32. Funeka had a 248-163 edge in total punches landed (and 903-493 in punches thrown), rocking Guzman on several occasions down the stretch. Funeka out-threw and out-landed Guzman in every round after the second. Two Canadian-based judges scored the fight a draw read more ...

Joan “Little Tyson” Guzman, 134 ½, 29-0, 17 KOs, from Santo Domingo the Dominican Republic, went head-to-head against East London, South Africa's Ali Funeka, 134, 30-2-2, 25 KOs read more ...

A bout between former two-division world champion Joan Guzman (29-0, 17 KOs) and former world title challenger Ali Funeka (30-2-2, 25 KOs) has been sanctioned and approved by the IBF for the two to battle for the vacant lightweight title. A date and site of the fight will be revealed once the bout is finalized read more ...

Barrios update from today's weigh-in: While the fight between now-former WBO Jr. Lightweight Champion Jorge Barrios and undefeated Joan Guzman will go on, only the undefeated Dominican will have a chance to walk away with the belt. Because he could not make the 130-pound limit today, Barrios has now been stripped of his belt. The two camps have completed negotiations, with Barrios having to settle the matter of extra poundage for an undisclosed read more ...

In a matchup of undefeated fighters, Joan Guzman registered a unanimous 12-round decision over Terdsak Jandaeng in a WBO featherweight title elimination bout Friday night at the Westchester County Center. Guzman, who had the fight's only knockdown in the fifth round, improved to read more ...