LAS VEGAS (Ticker) -- Junior Herndon pitched six scoreless innings and Joe Vitiello went 4-for-5 with two RBI to lead the Las Vegas Stars to a 9-4 victory over the Tucson Sidewinders. Herndon (4-1), who also tossed six scoreless frames in his previous start, allowed just four hits and three walks, striking out three, to pick up the win. Vitiello hit an RBI single to cap a four-run sixth inning and added a run-scoring double in the eighth. Mike Darr went 3-for-5 with three runs and Dusty Allen hit a two-run homer for Las Vegas, which won for the eighth time in its last nine home games. Craig Counsell went 4-for-4 and Rod Barajas hit a two-run double for Tucson, which lost its fifth game in a row. Erik Sabel (0-2) surrendered four runs -- three earned -- and eight hits over four innings to take the loss.