Cal receiver Keenan Allen didn't waste time Saturday providing a reminder of how dangerous he can be.
The sophomore hauled in a 42-yard bomb from Zach Maynard on the first play from scrimmage against Stanford, and he caught six balls in the first quarter alone for 97 yards.
After that, Allen was shut out as the Cardinal won 31-28 in the 114th Big Game.
Maynard targeted Allen on just two passes in the second half. Both were incomplete.
"I'm not sure they did much of anything (to stop him)," Cal coach Jeff Tedford said. "We missed him on a crossing route once, but they really didn't do much. It's a matter of when things open up."
Cal's success running the football in its previous two games pushed Allen to a secondary role. But the opening stages Saturday were a reminder that the Bears have to continue to find a way to get him the ball.
Allen helped Maynard, his half-brother, find an early groove. Maynard completed 10 of his first 12 passes and finished 20 for 30 for 280 yards and two touchdowns.
Maynard said he believed Stanford did focus on stopping Allen.
"Keenan's a great receiver and they double- and triple-teamed him to keep him from getting the ball," Maynard said.
Allen -- one of 10 semifinalists for the Biletnikoff Award, given to college football's best receiver -- totaled 11 catches over Cal's two previous games against Washington State and Oregon State and was held out of the end zone.
But the Cardinal secondary had trouble matching up with Allen in the first quarter.
Allen got a step on Johnson Bademosi on the Bears' first play and hauled in a 42-yard reception, though Maynard made an errant pitch to tailback Isi Sofele on the next play and Stanford recovered. Maynard then hit him with a 17-yard score in the right corner of the end zone that put Cal up 10-7 with 5:53 left in the first quarter.
"I thought Zach made a great throw to the corner," Tedford said. "Obviously we're trying to get (Allen) the ball as much as we can."
Allen, with 1,200 receiving yards, passed Dameane Douglas for second place on Cal's single-season list. Geoff McArthur holds the record of 1,504 yards in 2003.
Nose guard Aaron Tipoti, who didn't start last week against Oregon State because of assorted injuries, was back in action. Defensive end Trevor Guyton was helped off the field in the first quarter but returned before halftime.
Backup receiver Michael Calvin left in the fourth quarter with a knee injury of unknown severity.