Bulls star Derrick Rose will miss the rest of the season because of a torn anterior cruciate ligament in his left knee.
Rose was helped off the court late in Chicago's 103-91 playoff-opening victory over the Philadelphia 76ers on Saturday, a staggering blow for a team eyeing a championship run.
He scored 23 points and was playing more like the league's reigning MVP after missing 27 games because of injuries during the regular season, but his season came to an end as the Bulls were wrapping up an impressive win.
Rose crumbled to the ground after he drove the lane with about 1:20 left and the Bulls leading by 12. He was going for a layup when he came to a jump-stop and seemed to change his mind as the 76ers' Spencer Hawes and Lavoy Allen rotated over, passing off to a teammate before an awkward landing.
Team medical personnel immediately rushed out and tended to Rose for several minutes as he was writhing in pain near the baseline before helping him to the locker room. Rose was taken to the hospital, where MRI results confirmed the Bulls' worst fears.
Knicks' Shumpert also tears ACL
Knicks rookie guard Iman Shumpert will miss the rest of the post-season after tearing a left knee ligament in the third quarter of New York's Game 1 loss to the Miami Heat on Saturday.
The Knicks announced Shumpert also tore his lateral meniscus. Surgery will be scheduled in New York and Shumpert is expected to miss approximately six to eight months.
Shumpert, who started the final 17 games of the regular season after Jeremy Lin had knee surgery, was bringing the ball up the right sideline and tried to dribble behind his back when he pulled up and immediately grabbed at his left knee. He was brought into the Knicks' locker room for evaluation and later to a hospital for an MRI.