These days, with so many key players out nursing injuries, it's hard to get a proper assessment of where Arizona State stands 12 days before its season opener against UC Davis.

But so far, through almost three weeks of practice, one development should put ASU fans at ease: Brock Osweiler, about to start his first full season at quarterback, seems up to the challenge.

The junior quarterback, with just two career starts, was sharp during a short scrimmage Saturday at Sun Devil Stadium. He completed 10 of 15 for 137 yards and a touchdown, keeping the Sun Devils' first-team offense moving, even if it did stall at times in the red zone.

"I thought Brock played extremely well," ASU coach Dennis Erickson said. "He made a couple bad throws, but he was pretty darn consistent."

Osweiler's only major mistake: Overthrowing an open A.J. Pickens in the end zone after a quick fake had frozen the corner.

"We seemed to have some successful drives," Osweiler said. "There were a few things that need to be cleaned up in the red zone. ... I threw an incompletion down there that should've been a touchdown. I know we had a run play, I'm not exactly sure what happened, but it maybe should've been in the end zone. Just minor things."

Other observations:

-�Alex Garoutte's first field-goal attempt was blocked when Vontaze Burfict broke through the line untouched. It wasn't a good sign for a team that pretty much lost two games last season because of blocked point-after-touchdown attempts.

"I'm sick and tired of seeing field goals blocked," Erickson said. "How many games are we going to have to lose to figure that out? That's disappointing."

Overall, it wasn't a great day for special teams. Garoutte was 2 of 5 on field-goal attempts. In addition to the 22-yarder that was blocked, he connected from 35 and 43 and missed from 52 and 42. One of the misses was partly due to a bad hold from punter Josh Hubner.

-�True freshman Mike Bercovici, in competition with redshirt freshman Taylor Kelly for the backup quarterback job, ran the second-team offense. His accuracy was off, but he still managed to complete 5 of 10 for 64 yards. Kelly was 3 for 3 for 71 yards and a touchdown. He made a nice, over-the-top throw to Ozier for a 21-yard score.

-�Sophomore Will Sutton was one of three defensive linemen credited with sacks. Junior Onyeali and Bo Moos were the others. Sutton worked with the second team behind Moos and junior Corey Adams, who has played well since returning from a hamstring issue suffered early in camp.

-�ASU played without starting running back Cameron Marshall, which likely contributed to its red-zone miscues. Marshall (ankle) is expected to return next week. Others not participating: Cornerback Deveron Carr (hamstring), running back Deantre Lewis (hamstring), linebacker Oliver Aaron (concussion), receiver Gerell Robinson (knee) and right guard Andrew Sampson (knee.)

"I don't know that you can get a (true) assessment of yourself until you play a game," Erickson said. "We'll know more after we play Cal Davis. But if we want to compete for a (Pac-12) South championship, we better be better than we were (Saturday)."