Pittsburgh Penguins star Evgeni Malkin underwent successful surgery on his right knee, the team announced Friday.

He's expected to be unavailable for training camp in September, and there isn't currently a definitive timetable for his return.

Malkin suffered the injury after a collision in a contest against the Boston Bruins on March 16. As a result, he missed the final six weeks of the regular season and the first two games of the postseason.

The 34-year-old racked up eight goals and 20 assists in 33 regular-season games this campaign and chipped in five points in the four playoff games he appeared in.

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