SAN JOSE — Sharks rookie Tomas Hertl will undergo surgery next week to repair damage caused by a knee-on-knee hit Thursday night from Los Angeles Kings captain Dustin Brown.

That means, according to Sharks general manager Doug Wilson, that Hertl will miss more than the one month minimum announced last week. Just how long he will be out won't be known until after the operation and further information was not immediately available.

Wilson said Saturday that surgery on Hertl's right knee was a possibility, but stopped short of saying whether a ligament was torn.

"There are a couple of different things we're looking at," Wilson said. "I think the MRI shows something, and probably going in at some point will probably reveal the rest."

Brown received a five-minute major for kneeing and a game misconduct late in the first period of San Jose's 4-1 loss to Los Angeles. There was no further supplemental discipline.

For more on the Sharks, see David Pollak's Working the Corners blog at blogs.mercurynews.com/sharks. Follow him on Twitter at twitter.com/PollakOnSharks.