Milwaukee Bucks star Giannis Antetokounmpo crumpled to the ground with a non-contact injury about three minutes into the first quarter of Wednesday night's game against the Detroit Pistons at Fiserv Forum.
He was ruled out for the rest of the game before the end of the first quarter with a right calf strain, the Bucks said.
After delivering a jump pass for an assist to Bucks guard A.J. Green with 9:00 remaining in the opening period, Antetokounmpo fell to the floor while trying to get back on defense and remained on the ground.