What was thought to be just a sore knee is something much worse. Worse for the Texans, worse for the NFL, worse for everyone who loves football. 

Texans star rookie quarterback Deshaun Watson was limited with a knee injury in practice today, but the injury is a lot worse than originally thought. 

According to NFL Network's Ian Rapoport, Watson suffered a torn ACL in practice today. It was a non-contact injury that will sideline Watson for the rest of the season

Just terrible news. 

Watson became the starter in Week 2 against the Bengals and exploded on to the scene. Since then, he's been lighting up the stat sheet, throwing for close to 1,700 yards and leading the league with 19 touchdowns.

Now after an amazing 400-yard, four touchdown performance against the Seahawks, Watson is done for the season, at least that's the consensus. It's something you never want to see, especially with such an exciting young player. 

With Watson out, Tom Savage will presumably take over the starting quarterback role. It's a crushing loss to an exciting young player and the Texans are very much out of the playoff race now.

The Texans have surely found their franchise quarterback, but it's a huge step back for Watson's development going forward.