Even though the Houston Texans beat the Washington Redskins 17-6 in Week 1 today (Sun., September 7, 2014), the team got a crushing blow to their success. No. 1 overall pick Jadeveon Clowney injured his knee and was forced to leave the game for the Texans’ locker room.

The diagnosis came quick for the freakishly talented defensive en, and it wasn’t a positive one. Adam Schefter of ESPN speculated that Clowney had a torn meniscus:

Texans fear No. 1 overall pick Jadeveon Clowney has a meniscus tear that could require arthroscopic surgery, per source.

— Adam Schefter (@AdamSchefter) September 7, 2014

That was just confirmed by The Houston Chronicle’s John McClain, who said Clowney could miss 4-6 weeks after he undergoes arthroscopic surgery:

I was wrong with Clowney MCL. Its meniscus and he could miss 4 to 6 weeks. Whitney Mercilus will start. I apologize for the error.

— John McClain (@McClain_on_NFL) September 7, 2014

It’s not yet been confirmed, but there’s also speculation that Clowney sprained his MCL.

Whitney Mercilus will start in Clowney’s place, but the 2014 season has unfortunately continued last year’s bad luck. With Clowney paired alongside All-Pro talent J.J. Watt, the Texans were set to unlash the most fearsome pass rush duo in the league.

That plan will have to wait, and hopefully the lightning-fast rush end gets back to speed sooner than later.