Andrew Luck has been training with quarterback guru George Whitfield. Whitfield, who worked with last year's No. 1 pick Cam Newton, has had three sessions with Luck in Los Angeles leading into the NFL scouting combine later this week in Indianapolis. "There are things he wants to work on, but this is refinement not an installation or a surgery," Whitfield said. "It's about getting reps and he's really a marvel to watch. Very sound. Very consistent. Physically impressive. A power guy. A strong guy which people underestimate. One thing we've been doing is working the throws out on the perimeter -- those throws outside the hash marks."