MEMPHIS, Tenn. (AP) Memphis Grizzlies guard Mike Miller reinjured his back Friday night in a second-quarter collision with Desmond Mason of the Milwaukee Bucks.

Miller, in his fourth season, has battled back problems since soon after he was traded to Memphis from Orlando last season. He missed two games in late January because of the back spasms, and had seen limited action since returning three games ago.

Miller, who averages 11.7 points and four assists, collided with Mason near midcourt with 6:58 remaining in the second quarter and Memphis leading 41-33.

Miller lay on the court after the collision, and Mason was holding his left wrist after aggravating an injury from earlier in the season.

Memphis forward Pau Gasol approached Mason as he headed to the bench.

``I just said I didn't like what he did on the court,'' Gasol said of the confrontation. ``I saw the action, and I just couldn't let him go to the bench like that. I just stepped right in front of him and told him that was wrong.''

The ensuing scuffle led to technicals on Gasol and Grizzlies' center Lorenzen Wright and Mason and Bucks guard Damon Jones. Mason also was called for a flagrant foul on the play.

Mason soon returned, but Miller did not play the rest of the game, finishing with eight points in nine minutes.

Miller is listed as day-to-day.