The Golden State Warriors have revealed that an MRI scan confirmed Jermaine O'Neal has sustained injuries to both his knee and groin.
The 35-year-old was hurt towards the end of his side's victory over the Utah Jazz on Saturday night and the Warriors have refused to set a date for his return to action.
O'Neal did not travel with the team on Monday as Golden State recorded a second win in three days over the Jazz.
Dewayne Dedmon has been signed from the franchise's affiliate D-League team to fill in for O'Neal during his absence.