Posted by ESPN.com's Ted Miller
The main points:
Kevin Riley continues to lead the quarterback competition because he's done nothing to lose his perch, nor have Brock Mansion and Beau Sweeney done anything to advance ahead of him. Riley's lead, which will be contested again in fall practices, would be more decisive if Mansion hadn't rallied late in spring.
Running back Jahvid Best, probably the West Coast's top Heisman Trophy candidate, is running again after elbow and foot surgeries. It appears he'll be ready to play by the beginning of fall practices.
The competition at receiver will be intense in the fall, particularly after Marvin Jones and Alex Lagemann asserted themselves this spring. With Nyan Boateng, Verran Tucker and Jeremy Ross the leading returning players, and talented Michael Calvin returning from injury, there are six possibilities for primarily three lead spots.
The defense generally dominated spring practices and this unit could end up as the best in the Pac-10, despite the loss of three of four starting linebackers. As for the LB corps, the plot may thicken there when a trio of touted JC transfers arrives in the fall, led by Ryan Davis.