Tom Brady will obviously be first ballot hall of famer….
Is it possible he could retire, get into the Hall of Fame….than come back as a player?
Sure, anything's possible. It would be a publicity stunt.
Charlie Finley signed a 59-year-old Satchel Paige to pitch one game for the Athletics in 1965 (he threw three scoreless innings).
In baseball anyway, there seems to be a wall at age 50. Other than Paige and a similar publicity stunt with Minnie Minoso, nobody born in the 20th century has played in the majors after 50. Jamie Moyer, Hoyt Wilhelm and Julio Franco all played until they were 49.