Mavericks' Luka Doncic hurts right ankle again

Perkins: Doncic's ankle injury is a huge setback for Mavs (1:06)

Kendrick Perkins and Paul Pierce react to Luka Doncic turning his ankle in practice and what it will mean for the Mavericks moving forward. (1:06)

Dallas Mavericks star Luka Doncic will miss at least one game after injuring his right ankle during Thursday's practice.

Doncic will undergo an MRI on Friday morning, sources told ESPN, and will not play later that night against the Rockets in Houston.

The All-Star guard also is unlikely to play Saturday against the Atlanta Hawks, sources said.

Two sources said the ankle injury, suffered when Doncic stepped on another player's foot, appears to be similar to the sprain he suffered earlier this season.

That sprain, which occurred when Doncic stepped on Miami Heat guard Kendrick Nunn's foot on Dec. 14, caused Doncic to miss four games. He returned to practice 10 days later.

Doncic suffered the injury near the end of practice on Thursday and was getting treatment while coach Rick Carlisle addressed the media.

A source said Doncic stepped on a defender's foot while driving to the basket during a brief scrimmage.

Doncic, 20, who was voted to be the youngest All-Star starter since LeBron James in 2005, is averaging 28.8 points, 9.5 rebounds and 8.7 assists per game.