SAN JOSE, Calif. - San Jose Sharks forward Tomas Hertl will undergo right knee surgery next week, sidelining the rookie star for more than a month.

General manager Doug Wilson said Monday that the team will know more about how much time Hertl will miss following the surgery.

Hertl was hurt last Thursday in a knee-on-knee collision with Los Angeles' Dustin Brown. Brown received a major penalty and game misconduct for the hit on Hertl.

Hertl leads all rookies with 15 goals and 25 points so far this season.