STILLWATER, Okla. — Tight end Brandon Pettigrew caught a 55-yard touchdown pass with 1:37 remaining to give Oklahoma State a 49-45 win over Texas Tech despite a career-best 646 yards passing from Red Raiders quarterback Graham Harrell. Texas Tech (3-1, 0-1 Big 12) had a final chance to win but Jeremy Crabtree, the nation's leader in receptions and touchdown catches, let a 15-yard pass from Harrell bounce off his hands in the end zone after Oklahoma State cornerback Ricky Price flashed in front of him with 11 seconds remaining. While Texas Tech amassed yards with the nation's second-ranked passing offense, Oklahoma State (2-2, 1-0) did much of its damage on the ground with three rushers surpassing 100 yards for the first time in school history. Quarterback Zac Robinson ran for two scores and threw for another, while Dantrell Savage and Kendall Hunter each added touchdown runs. But the game was decided on a long passing play by the Cowboys. Pettigrew caught a short pass from Robinson, turned and rumbled down the right sideline before diving across the goal line for the score to put the Cowboys ahead. Harrell completed 46 of 67 passes with five touchdowns, and he also guided Tech into position for Alex Trlica's 20-yard field goal that gave the Red Raiders a 45-42 edge with 4:49 to play. But after Tech stopped the Cowboys once, the Red Raiders couldn't run the final 2:44 off the clock — throwing incompletions out of their spread set — and Oklahoma State scored on its first play from scrimmage after getting the ball back with 1:49 remaining. Tech's Danny Amendola caught 13 passes for a career-high 192 yards and a score, and Crabtree caught three touchdown passes, but even Tech's 718 yards of total offense — the most ever allowed by the Cowboys — weren't enough to secure the win. Savage ran for 130 yards on 25 carries, Robinson picked up 116 on 13 rushes and Hunter ran 14 times for 113 yards. The Cowboys ended up with 366 yards on the ground. It was a shootout from the very beginning, with both teams scoring on their first two possessions. Harrell and Crabtree hooked up for touchdowns three times in the first half as the Red Raiders racked up 388 yards passing. Crabtree fought through Calvin Mickens' tackle for a 9-yard TD on Tech's opening possession and caught a pair of 2-yard tosses. He also had a 75-yard grab down the right sideline to set up Shannon Woods' 6-yard scoring run. The Cowboys, meanwhile, were rolling up yards on the ground. Savage pinballed in for a 4-yard TD run, Hunter raced through a convoy of blockers for a 46-yard score and even Robinson got into the action with a 48-yard dash on a scramble. After allowing touchdowns on Oklahoma State's first four possessions, Texas Tech finally got a stop when Jamar Hall picked off Robinson's deep ball intended for Tommy Devereaux. The Red Raiders took over with 88 seconds left before halftime, and that was plenty for them to drive 86 yards for the go-ahead score. With 18 seconds left, Harrell motioned as though he was going to spike the ball, then faked it and fired a 2-yard scoring pass to Crabtree for a 35-28 halftime edge. Oklahoma State went back up 42-35 on receiver Seth Newton's 33-yard touchdown pass to Jeremy Broadway on a trick play before Tech tied it on Amendola's 41-yard touchdown reception with 11:50 to play.