Deshaun Watson was practically unstoppable for six and a half games in 2017. Then an ACL injury struck in practice. Carson Wentz was arguably the league's MVP until he suffered the same injury during a Week 14 win. Now, with the 2018 season approaching, Texans and Eagles fans are praying their respective quarterbacks are good as new. If not, Watson and Wentz will join the ever-growing ranks of NFL stars who sadly saw their careers taken away by serious injury. While wishing they avoid such a fate, let's look back at some of the greatest NFL careers derailed by injury.