LUBBOCK, Texas (AP) -- B.J. Symons threw five interceptions, had a season-low one touchdown pass and failed to throw for at least 400 yards for the first time in eight games, but Texas Tech still managed to come back and beat Colorado 26-21 Saturday night.
Symons was 30-of-51 for 399 yards and tied a school record for interceptions. He became the 22nd quarterback in NCAA Division I-A history to throw for 4,000 yards, and the second in Big 12 history after former teammate Kliff Kingsbury.
Tech (6-3, 3-2 Big 12) went ahead for good midway through the third quarter when Symons threw a 13-yard touchdown pass to Wes Welker -- who also set the NCAA Division I record with his eighth career punt return for a touchdown.
Welker, who had 211 all-purpose yards, gave Tech a spark late in the first half when he returned a punt 58 yards for a TD to cut Colorado's lead to 14-9.
Welker had been tied at seven with Nebraska's Johnny Rodgers, Kansas State's David Allen and Jack Mitchell of Oklahoma. OU's Antonio Perkins also has seven.
Welker performance pushed him past Oklahoma's Quentin Griffin;for career all-purpose yards in the Big 12. Welker has 5,293 and trails Texas' Ricky Williams;for No. 1. Williams had 5, 992 yards.
Symons threw interceptions on each of Tech's first four possessions. Colorado safety J.J. Billingsley pulled in the first two interceptions in the opening 3:14 of the game.
Billingsley's first interception came on Symons' first pass of the game. On the Buffaloes first play after the interception, Joel Klatt threw a 27-yard touchdown pass to Derrick McCoy to put Colorado up 7-0.
Later in the quarter, Tech drove to the Colorado 9, but Symons' pass to Welker was intercepted by Medford Moorer and returned 69 yards to the Tech 22. Six plays later, Colorado running back Daniel Jolly scored on a fourth-and-1 play to give the Buffaloes a 14-0 lead.
Again Tech drove deep into Colorado, getting first downs on four consecutive plays. Then Symons' pass was tipped at the line of scrimmage and intercepted by Brandon Dabdoub.
Tech was shut out in the first quarter for only the second time this season. North Carolina State held the Red Raiders scoreless in the first half in the Wolfpack's 49-21 win.