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Michael Conroy, Associated Press
Baylor quarterback Robert Griffin III warms up before running the 40-yard dash at the NFL football scouting combine in Indianapolis, Sunday, Feb. 26, 2012.

WACO, Texas — Robert Griffin III believes he ran even faster during the NFL combine.

The Heisman Trophy winner impressed scouts with his official time of 4.41 seconds in the 40-yard dash that was the fastest among quarterbacks. He says he was told on the field that it was actually 4.35 seconds.

Griffin was back at Baylor on Monday, doing a photo shoot for the cover of EA Sports' NCAA Football 13 game that will be released this summer.

His pro day will be on the campus in three weeks. He didn't throw in Indianapolis over the weekend, but did other drills and interviewed with at least eight teams. Griffin says the stress is over and he's excited about everything that happened at the combine.