A Worcester man has been convicted of fatally stabbing another in a fight over a woman at a party. Felix Rodriguez was found guilty by a Worcester Superior Court jury Wednesday of manslaughter in the December 2009 death of Willie Jackson, 25. Rodriguez was charged with murder, but was convicted of the lesser charge of voluntary manslaughter. He is scheduled to be sentenced Friday. A prosecution witness testified that the 54-year-old Rodriguez brandished the knife in a dispute over the woman. After it was knocked out of his hands, he retrieved it and stabbed the victim.