DALLAS (AP) -- Toronto point guard Kyle Lowry is not active for Wednesday night's game against the Dallas Mavericks after leaving the Raptors' last game with a sprained right ankle.

Lowry, who was acquired this past summer from Houston, injured his ankle Tuesday night against Oklahoma City and left with 1:29 remaining in the first half. The seventh-year guard is averaging 18.3 points and 6.3 assists through four games.

Jose Calderon, last season's starter before Lowry's arrival, and John Lucas III are expected to share point guard duties.

Dallas forward Elton Brand is not with the team for so he can be with his wife for the birth of his second child.

The shorthanded Mavericks were also without forward Shawn Marion, who is expected to miss at least three games after leaving Monday night's game against Portland with a sprained left knee ligament. All-Star Dirk Nowitzki is still recovering from surgery and hasn't played this season.

Chris Kaman is expected to start in Brand's place and rookie Jae Crowder will fill in for Marion. Brand is averaging 5.8 points and 6.3 rebounds in four games this season.