Utah’s offense has regressed in quarterback Cameron Rising’s absence, and the No. 16 Utes’ chances of living up to Big 12 preseason expectations may hinge on his status going forward.Rising has not played since injuring his throwing hand late in the second quarter against Baylor on Sept. 7, and the seventh-year senior — who has thrown for 346 yards and seven touchdowns in 1 1/2 games this season — likely will be a game-time decision in Utah’s Big 12 game at Arizona State (4-1, 1-1) on Friday night in Tempe, Ariz.If Rising can’t play, freshman Isaac Wilson will make his fourth straight start.Utah (4-1, 1-1) has struggled to finish drives in Rising’s absence. The Utes are averaging 16 points and 410 yards per game against Big 12 foes, and they have just two touchdowns in their past eight trips to the red zone.Through five games, Utah has 11 touchdowns on 22 drives in which the Utes have reached the red zone.”We’re about 20 percent off where we need to be,” Utah coach Kyle Whittingham said. “It’s not like we’re absolutely horrible. We’re at 50 percent, which isn’t good by any means, but 70 percent is our target. If we can be 70 percent in the red zone, which we have been for several years … then that’s good production.”Wilson has struggled to be a consistent passer.He is averaging 242 yards passing per game in his three starts this season. Still, he has completed only 55.7 percent of his passes and has thrown seven interceptions in five games. His mistakes stalled the Utah offense at crucial junctures in a 23-10 loss to Arizona on Sept. 28.