Didn't Jhavid Best attempt to make the Olympic or world team...after all of his concussion issues?
Jahvid Best made the 2016 Olympics for some small country nobody has ever heard of. He ran 10.39 in the heats and of course didn't make the final. He's the first NFL player to make the Olympics and he got embarrassed.
Sure, if NFL players quit football and became professional sprinters I'm sure they could very easily medal. But you can't do both. They have the mentality you don't need to work hard as a sprinter. Just show up and run fast.