No quarterback in the NFL is older than the New England Patriots' Tom Brady. While he has not yet shown any signs of slowing down and is coming off an MVP season and historic Super Bowl performance, the future Hall of Famer will be 41 years old once the 2018 regular season gets kicked off. Brady is therefore entering near-unchartered territory when it comes to quarterbacking in the NFL.
Only four times in league history did a passer aged 41 or older attempt more than 200 passes in a season: Warren Moon did it in 1997 and 1998, when he threw 528 and 258, respectively.