New York Jets rookie quarterback Sam Darnold celebrates his 21st birthday on Tuesday, which means the soon-to-be-millionaire finally can legally go to a bar or casino. To honor the milestone, we've compiled 21 age-related factoids and memorable moments:
1. If Darnold cracks the starting lineup as a rookie, he'll be the youngest quarterback to start a game for the Jets. The mark is held by Joe Namath, who was 22 years, 118 days old when he made his starting debut on Sept. 26, 1965. Namath got his famous nickname -- Broadway Joe -- as a rookie.