Bill Wippert/Associated Press

J.J. Watt underwent sports hernia surgery to repair the groin injury he suffered against the Kansas City Chiefs in the AFC Wild Card Round, according to Adam Schefter of ESPN. Tania Ganguli of ESPN indicated that the doctor who performed the surgery on Watt also performed surgery on Watt's teammate, Arian Foster.

Watt's timeline for recovery is unclear.

Continue for updates.

Watt Comments on Injury

Saturday, Jan. 9

"It was extremely painful," Watt said, per Aaron Wilson of the Houston Chronicle.

Watt Provides Invaluable Presence for Texans Defense

Watt is arguably the NFL's most indispensable player. He has been named Defensive Player of the Year twice in the past three seasons and is on his way to a third in 2015.

Prior to the Texans' Week 13 game against the Buffalo Bills, Neil Hornsby wrote on MMQB that Watt had amassed more sacks and quarterback hits than the entire Bills defensive line this season. He ended the regular season on a high note with three sacks in the Texans' division-clinching win over Jacksonville.

Nathan Jahnke of Pro Football Focus wrote leading into the AFC Wild Card Game against Kansas City that Watt finished second among all interior defenders with a 95.4 pass-rushing grade during the regular season.

The 26-year-old is not immune to injuries—he broke his hand in practice prior to Week 14 but still took the field—but he has never missed a start in five seasons.