It's Reggie Herring's job to make sure that Jason Williams isn't remembered as a workout warrior.

Williams wasn't invited to the combine, but his draft stock soared after a phenomenal display of athleticism at his pro day. He ran a 4.49 40, posted a 39-inch vertical and did 26 bench-press reps. LB Aaron Curry, who went fourth overall to the Seahawks , posted the best 40 time (4.56) and vertical jump (37 inches) among linebackers at the combine. The LB high for bench-press reps at the combine was 30.

Williams' athleticism was the primary reason the Cowboys picked him early in the third round. He has the potential to be a difference maker, but he's not ready right now to play a significant defensive role.

"He's raw, but that's in a good way," Herring said. "He doesn't have any bad habits. You get to start from scratch with these guys."

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