By William Mackay: Former two division world champion Robert Guerrero’s shoulder surgery was a success to repair his torn left rotator cuff ligament, according to publicist Mario Serrano. The prognosis is that it’s going to take four to six months for Guerrero to get back in the ring.

Serrano said this to the Gilroydispatch.com: “They went in there and scoped it out. They repaired the torn rotator cuff and anchored it down. The doctor said it is really promising for Robert to get back to 100 percent.”

However, there’s really no telling how well Guerrero’s shoulder will recover from this injury because it’s a serious one and this is his main power shoulder. To be sure, Guerrero can likely be successful even if he doesn’t regain all of the power he once had in the shoulder, but he’s going to be limited in what he can do at light welterweight if he’s not able to punch with power.

Guerrero wasn’t looking very powerful even at lightweight, and at light welterweight he could be at a huge disadvantage if he’s unable to regain all of the strength he once had. We’ve seen fighters like Jeff Lacy fail to gain the power he once had in his left hook after suffering a torn rotator cuff. I imagine his doctor also felt positive about him regaining full strength in his shoulder.

Guerrero is going to have to pray that he can find enough power in the shoulder for him to be a factor at light welterweight. Guerrero injured his shoulder on August 17th while sparring to get ready for a previously scheduled August 27th fight against Marcos Maidana. The injury prevented that fight from going ahead.