Posted by ESPN.com's Tim Griffin
As expected, the Big 12 isn't facing many challenges in the early evening games.
Iowa State appears to be in the toughest battle against Army.
Alexander Robinson has picked up where he left off last week, rushing for nearly 100 yards in the first half to key the Cyclones' 17-10 lead. Robinson has accounted for both early scores with a 68-yard TD run and a 2-yard TD grab from Austen Arnaud.
The Cyclones' defense has been very impressive as it forced three straight Army three and outs midway through the first half. But Army pulled within 17-10 when quarterback Chip Bowden utilized 6-foot-10 wide receiver Ali Villanueva on three straight plays before a 5-yard TD reception. That's not surprising considering the four starters in Iowa State's secondary average 5-foot-9.
The Tigers have been limited to four first downs and have failed on all seven third-down plays of the first half.
Keith Toston, who I think is one of the best backup tailbacks in the league, has already scored three times to key OSU's efforts.
Nebraska has put Louisiana-Lafayette away with an early blitz with four straight scoring possessions to start the half. Zac Lee's injured left thumb hasn't bothered him as he completed 11 of 14 passes for 191 yards.
Baylor charged back after being stopped on downs to score on four straight possessions en route to 28-10 lead late in the first half. Robert Griffin appears to have rebounded from his recent slump, and redshirt freshman Jarred Salubi has already topped 100 rushing yards.
And Texas A&M quarterback Jerrod Johnson has put on the biggest offensive display of the evening games by producing four touchdowns as the Aggies have claimed an early 28-6 lead over UAB late in the first half.
Johnson has run for three TDs and passed for another one as the Aggies' defense has played much better than expected.
After being toasted for 30 points by Utah State last week, the Aggies have limited the Blazers to a pair of field goals as they allow UAB 24 total yards in their first six possessions.