In Dillon Thieneman's case, the film backs the stopwatch.

The Bears’ top pick in the draft has both kinds of speed: stopwatch speed and playing speed. It's more of an eye test when it comes to the impact Thieneman can have on this Bears defense , although the stopwatch definitely backs up what the eye detects.

Thieneman acknowledged the difference between the stopwatch and what he can do to help the Bears in the secondary for actual games. His game speed is at least impressive as what he showed with a 4.35-second clocking for the 40-yard dash at the combine.

"I feel like speed is very interesting, because there's normal speed, and then there's game-playing speed," Thieneman said.…