SAN JOSE -- San Jose Sharks forward Tomas Hertl will have surgery on his sprained right knee on Tuesday, one day after he was placed on injured reserve.
"Hertl will undergo a minor procedure tomorrow under the direction of the Kaiser Permanente medical team," Sharks general manager Doug Wilson said in a statement Monday. "Following the procedure, Hertl will proceed with his rehabilitation schedule in San Jose. No timetable has been set for his return to game action."
Hertl, 23, injured his knee in the second period of a 3-2 loss at the St. Louis Blues on Thursday. It appeared he sustained the injury in a collision with Blues forward Jori Lehtera.
Hertl had right-knee surgery as a rookie during the 2013-14 season after a knee-on-knee collision with Los Angeles Kings forward Dustin Brown. He injured his right knee in Game 2 of the 2016 Stanley Cup Final against the Pittsburgh Penguins and missed the rest of the series.
Video: CBJ@SJS: Hertl taps in rebound for PPG
Hertl has four goals and five assists in 17 games this season, spending time at left wing and center. He had 21 goals and 25 assists in 81 regular-season games last season, and then had six goals and five assists in 20 Stanley Cup Playoff games.
"It's big," Sharks captain Joe Pavelski said Monday morning of Hertl going on injured reserve. "He's a big body. He's played well so far this year. Someone steps up, someone fills the hole, and everyone pulls a little bit more. That's all you can do. You don't need to do too much. You just got to do your job. The next guy that will step in will do his job, and we'll get it done together."
Fourth-line center Chris Tierney moved up to the third line to take Hertl's spot Monday against the New Jersey Devils. The Sharks recalled center Daniel O'Regan from the San Jose Barracuda of the American Hockey League, and he made his NHL debut at center on the fourth line.
The Sharks selected Hertl with the 17th pick in the 2012 NHL Draft.