Rookie first-round signal caller E.J. Manuel continued his push for the Buffalo Bills' starting quarterback job. Kevin Kolb's chances, meanwhile, seem to be slipping away. Manuel outplayed Kolb and the Bills topped the Minnesota Vikings, 20-16, in the second preseason game for both teams. The Florida State product and first quarterback taken in the draft, Manuel, was 10-of-12 for 92 yards with a score over three series for the Bills, who selected the dual-threat with the 16th overall selection. Manuel was a perfect 6-of-6 on his initial drive to start the third quarter, which resulted in a score when he flipped a 4-yard TD pass to Brad Smith and gave the Bills a comfortable 20-3 advantage. Kolb, meanwhile, started the tilt and completed 13-of-21 passes for 111 yards with an interception. It was an inauspicious outing for Kolb, who made his preseason debut. He missed the previous eight days of practice after twisting his knee while slipping on a wet rubber mat in practice on Aug. 3. Christian Ponder was 5-of-12 for a mere 53 yards in limited action for Minnesota, which finished 10-6 last season and fell to the Green Bay Packers in the NFC Wild Card round. Adrian Peterson again didn't play for the Vikes. He's been rested so far during the preseason.