Silver Stars guard Becky Hammon has torn the anterior cruciate ligament in her left knee and is likely out for the season after playing just one game.
The seven-time All-Star missed San Antonio's first 10 games with a broken finger and played 12 minutes against Los Angeles on Saturday before getting hurt.
Hammon went down near the baseline midway through the second quarter and was carried off the court.
The team said in a news release Monday that Hammon will have surgery this week and a timetable for the 36-year-old's return will be determined after she starts rehab.
Hammon was second in the WNBA in assists last season with 176 and 3-pointers with 80.
She is a two-time Olympian with Russia.