"But I'm an old man, I'm confused!" Uncle Leo famously said on Seinfeld. Leo may have used age as an excuse for his behavior, but the guys on this list sure didn't.
In sports, some athletes prove the old adage "age is nothing but a number" to be true. These players defied logic. Forget their bodies breaking down on them. They still managed to put together remarkable seasons despite their age.
No sport is immune. We're talking heavyweight champions of the world, World Series winning pitchers and of course, quarterbacks.
It's time now to start the slideshow and check out some of the best "old guy" seasons in sports history.