OKLAHOMA CITY (Ticker) -- Ruben Sierra hit a game-winning single in the bottom of the ninth inning to give the Oklahoma Redhawks a 3-2 victory over the Omaha Golden Spikes. Cliff Brumbaugh led off the inning with a single, moved to second on a sacrifice bunt by Chris Demetral, moved to third on a passed ball and scored when Sierra singled after Jon Shave was intentionally walked. Jonathan Johnson (2-0) pitched two scoreless innings of relief to get the win. Ryan Glynn started and gave up two runs and six hits over seven strong innings for Oklahoma, which has won six of its last seven games. Tim Byrdak (1-2) took the loss, allowing one run -- none earned -- and two hits during his 1 1/3 innings of relief. Jeff Austin, making his first start after being promoted from Double-A Wichita, pitched five innings and allowed two runs -- none earned -- and six hits for Omaha, which has lost eight consecutive games.