Kyrie Irving, one of the best players for the Dallas Mavericks, broke his left hand while training in July and had to get surgery.
Doctors still haven't said how long it will take for him to heal, so it's unclear when he'll be back on the court.
Last year, Irving helped the Mavericks reach the NBA Finals, but they lost to the Boston Celtics.
Even though Irving is out, the Mavericks are still a strong team, and they're hoping he can recover quickly so he can help them win the championship this year.
