My favorite player growing up was Cal Ripken Jr.
As a Baltimore Orioles fan, it was easy to take for granted that Ripken would be in the lineup every single night. The fact that Ripken played every game of every season for nearly 18 seasons, while putting up a 3.5 WAR or better in 16 of those seasons, is one of the most impressive feats in baseball history.
My belief today is that Ripken would have been one of the best hitters in the history of the game had he taken a few breaks to recharge himself.