The Texans have also announced they have signed Antonio Smith.
According to ESPN, Watt could possibly miss the remainder of the 2016 season.
Watt released this statement on Twitter: "Adversity sucks. Your attitude towards it doesn't have to. I will be back."
Adversity sucks.— JJ Watt (@JJWatt) September 28, 2016
Your attitude towards it doesn't have to.
I will be back. pic.twitter.com/56lhtHYs7r
ESPN's Adam Schefter reports that Watt will be placed on injured reserve Wednesday after the latest setback.
JJ Watt reinjured his back, as @RapSheet reported. Could wind up on IR this time.— Adam Schefter (@AdamSchefter) September 28, 2016
"It doesn't look good," a source told Schefter.
Texans source says on JJ Watt'a back injury, "It doesn't look good."— Adam Schefter (@AdamSchefter) September 28, 2016
Watt underwent surgery in the off-season to repair a herniated disc. He missed the entire training camp and preseason after the surgery. The injury likely occurred during Thursday's game against the New England Patriots.
Before Watt's arrival to Houston, Texans had never made the playoffs and had the fifth-worst NFL record, according to ESPN. Since then they've won three division titles and two playoff games.
Watt has never missed a game in his six-year NFL career.
To get alerts for breaking news, download the abc13 news app for iPhone or Android. You can also get breaking news alerts sent to you by email.