Kamil Krzaczynski/Associated Press

Golden State Warriors star Klay Thompson was diagnosed with a torn ACL after he left Thursday's Game 6 loss to the Toronto Raptors with a left knee injury.

Thompson's agent, Greg Lawrence, confirmed the news to ESPN's Adrian Wojnarowski, and this was later confirmed by the Warriors.

Thompson went down on a third-quarter dunk attempt when he was fouled by Danny Green. He remained in the game to shoot two free throws before exiting.

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Thompson left the arena on crutches after the Warriors formally ruled him out for the remainder of the contest:

Head coach Steve Kerr later revealed Thompson told him he planned to return to the floor:

Thompson maintained his typical level of durability during the regular season, appearing in 78 games and averaging 21.5 points, 3.8 rebounds and 2.4 assists.

The five-time All-Star missed the first playoff game of his NBA career, though, when he strained his hamstring in Game 2 of the 2019 NBA Finals.

Thompson's injury came one game after the Warriors lost Kevin Durant to a ruptured Achilles tendon in his first appearance since suffering a calf injury versus the Houston Rockets in the second round.