SAN ANTONIO - Spurs guard Tony Parker sprained his right ankle in practice Monday and is questionable to play in San Antonio's season opener this week.

San Antonio Spurs guard Tony Parker, left, of France, drives past Dallas Mavericks guard Anthony Johnson (8) during the first quarter of their NBA basketball game in San Antonio, Friday, Oct. 27, 2006. [AP]

X-rays showed that Parker's ankle wasn't broken, Spurs spokesman Cliff Puchalski said. He added that doctors expect to know by Tuesday whether Parker will be able to play Thursday against the Dallas Mavericks.

The Spurs will face Cleveland on Friday in their home opener.

Puchalski said Parker was doing drills Monday when he took a shot and landed on someone's foot. He didn't know if the 6-foot-2, 180-pound Parker would practice Tuesday.

Parker averaged 18.9 points, 3.3 rebounds and 5.8 assists per game last season.

In San Antonio's final preseason game last Friday against Dallas, Parker scored 20 points in the Spurs' 100-79 victory.