Andy Carpenean, Associated Press
Wyoming quarterback Dax Crum scrambles out of the pocket after having his helmet torn off by an Ohio defender on Saturday.

ALBUQUERQUE, N.M. — Quarterback Andy Dalton ran for two touchdowns as TCU took advantage of New Mexico's first-half mistakes and went on to a 26-3 win Saturday in the season-opener for both teams.

The Horned Frogs scored on their first three possessions and needed a span of just more than four minutes to build a 16-0 lead on the mistake-prone Lobos in the Mountain West Conference game.

Dalton scored on runs of 11 and 4 yards, the second TD set up by Jeremy Kerley.

The Lobos, beaten 37-0 by TCU last year in Fort Worth, avoided another shutout when James Aho kicked a 28-yard field goal with 10:48 left in the third quarter.

New Mexico, 0-4 against the Horned Frogs since TCU joined the MWC in 2005, hurt itself with a fumble, an interception and a 7-yard-punt in the first half.

The short punt by first-year Lobo kicker Adam Miller gave the Horned Frogs the ball on the New Mexico 30 and set up a four-play drive that ended with Dalton's 11-yard scoring run.

The Lobos got off only one play on their ensuing possession as Donovan Porterie's pass hit TCU safety Steven Coleman in the chest at the New Mexico 35 and Coleman returned it to the 9. Halfback Joseph Turner scored on second down from the 2.

TCU also got field goals of 50 and 39 yards from Ross Evans.

Porterie suffered a neck injury on the play and did not return.

Backup Brad Gruner made his first pass a spectacular one, teaming with wide receiver Chris Hernandez on an 81-yard pass play to the TCU 12-yard line. But New Mexico's offense picked up 6 yards on three plays and settled for Ajo's field goal.

Porterie suffered a neck injury late in the first half.

WYOMING 21, OHIO 20: At Laramie, Wyo., sophomore transfer Dax Crum helped lead Wyoming on a key fourth-quarter drive and the Cowboys' defense held tight in the game's final minutes as Wyoming beat Ohio 21-20 on Saturday in the season-opener for both teams.

After trailing for two quarters, Wyoming (1-0, 0-0 Mountain West) built a 13-play, 84-yard drive, capped by Crum's 23-yard touchdown pass to Donate Morgan for the winning score at 7:28 in the fourth.

Wyoming's defense weathered two more Ohio drives, buoyed by an interception by Quincy Rogers at the Wyoming nine yard line that stifled a promising drive by Ohio (0-1, 0-0 Mid-American) with four minutes to play.

"I felt the difference in the game was who would rush the ball better," Wyoming coach Joe Glenn said. "We wanted to wear them down and we wanted to wear them out. We didn't do it by much, but I'm telling you a one point difference in any sporting event makes a huge difference."

Ohio's Theo Scott went 26-of-35 for 224 yards, one touchdown and one interception. Chris Garrett led the Bobcats in rushing, gaining 30 yards on 12 carries. Taylor Price racked up 139 yards on 14 catches. Linebacker Noah Keller led the Bobcats with seven solo tackles.

Ohio coach Frank Solich complimented his team's passing game, but said the Bobcats were hurt by costly turnovers.

"It was a game of field position," he said. "We felt coming into the game that it would be like that, and in the second half we didn't have good enough field position to make plays."

Wyoming's Devin Moore had 90 yards on 25 carries and Chris Johnson led in receiving with 37 yards on four catches. Tashaun Gipson led the Cowboys with seven tackles.

Crum was named Wyoming's starting quarterback earlier this month after transferring from Mesa Community College in Arizona, where he played one year after leaving the Arizona State team. He went 14-of-22 with two interceptions and two touchdown passes on Saturday.

Crum said he could see the Ohio defense wearing down as Wyoming mounted its game-winning drive, which lasted 6:12.

"I think they might have started getting a little worn out by the end there," he said. "Our guys were kind of getting momentum, and we were running the ball great."