Peyton Manning Tanks Concussion Tests: Indianapolis Colts quarterback Peyton Manning says that he intentionally fails the NFL's baseline concussion tests so that it's easier to pass them after suffering a concussion. "Before the season, you have to look at 20 pictures and turn the paper over and then try to draw those 20 pictures," he told ESPN. "And they do it with words, too. Twenty words, you flip it over, and try to write those 20 words. Then, after a concussion, you take the same test and if you do worse than you did on the first test, you can't play. So I just try to do badly on the first test."