Toronto Raptors guard Kyle Lowry will not return to Game 4 against the Brooklyn Nets after turning his left ankle in the first quarter, the team announced.

With just a little more than three minutes left in the first quarter, Lowry was dribbling up the court when he was cut off by Nets guard Chris Chiozza. Lowry's left foot stepped on Chiozza's foot, and the Raptors' point guard started limping right away.

Lowry left the arena for diagnostic imaging elsewhere on the NBA campus, the Raptors said.

After a timeout, Lowry came right back into the game but immediately realized something was wrong. After limping around through an offensive possession -- that still ended in a 3-pointer for Toronto -- Lowry committed a foul to stop the clock and sub himself out of the game.

Instead of heading back to the Raptors' bench, Lowry headed straight for the Toronto locker room.

The Raptors are looking for their first playoff sweep in franchise history on Sunday against the Nets. They have a conference semifinals matchup with the Boston Celtics ahead if they finish off Brooklyn.

Lowry, who averaged 19.4 points, 7.5 assists and 5 rebounds per game in the regular season, put up 16 points, 5.3 assists and 8.7 rebounds in the Raptors' first three playoff games.