sentences:  Guererro could hardly open his left eye toward the end of the fight, but scored a unanimous 12 round decision over the tough Kamegai with official scores of 116-112, 117-111, and 117-111, thereby marking a triumphant return to the ring.On March 7, Guerrero fought in NBC's first episode of their new series, "Premier Boxing Champions" at the MGM Grand in Las Vegas.Guerrero's opponent was undefeated Keith Thurman.