MONTREAL (AP) _ Moises Alou, facing a possible suspension for his part in an ugly brawl with the Astros on Monday, hit a pair of two-run homers Tuesday night to lead the Expos to a 7-4 win over Houston.

Alou, who threw a batting helmet that struck Astros manager Terry Collins in the face during the bench-clearing brawl, homered off Doug Drabek (6-8) in the first and hit his 16th homer in the second to give Montreal a 7-3 lead.

Mike Lansing added a three-run shot during a five-run second for Montreal, which won its third straight.

Pedro Martinez (10-7) allowed four runs and five hits in seven-plus innings to earn just his second win in eight career decisions against Houston.

The right-hander, who lasted four innings in his last start Aug. 8 at Houston, struck out four and walked two before leaving after giving up a leadoff double in the eighth.

Mel Rojas got four outs for his 22nd save.

Trailing 3-0, Mark Grudzielanek led off the Expos first with a double, and Alou homered two outs later.

In the second, Dave Silvestri hit a one-out single and Martinez, attempting to sacrifice, was drilled on a 1-0 pitch from Drabek. Lansing followed an out later with his 10th home run _ matching his career high set last season _ for a 5-3 lead. Henry Rodriguez singled and Alou hit his 16th homer for a 7-3 lead.

Houston's Sean Berry hit a three-run homer, his 13th, off Martinez in the first.

Jeff Bagwell and Derrick May drew two-out walks off Martinez in the inning and Berry followed with his home run.

Craig Biggio's RBI triple in the fifth made it 7-4.

Drabek, who tossed a six-hitter against Montreal on Aug. 8 in a 6-2 Astros win, lasted two innings and was charged with seven runs and seven hits. He struck out one hit a batter and left when Donne Wall started the third.

Following Monday's brawl, Collins needed four stitches to close a gash above his lip, sustained when Alou fired his helmet from close range.

The brawl touched off after Houston starter Danny Darwin hit Rodriguez with a pitch and Rodriguez charged the mound, saw Darwin, Collins, Derrick May and John Cangelosi of the Astros, and Rodriguez, Alou and Jeff Juden of the Expos ejected.

Notes: Some ill will from Monday's brawl was still evident Tuesday. Martinez, who came up-and-in and decked Biggio with a 2-2 pitch in the first inning, did not appreciate getting hit by Drabek in the second. Martinez glared at Drabek and was restrained by Expos pitching coach Joe Kerrigan, before walking to first. ... Alou and Reynolds, who squared off in Monday night's brawl, met near the Astros on-deck circle Tuesday as the Expos were taken batting practise. The two shook hands folowing a five-minute conversation. ... It was Alou's sixth two-homer game, the last coming July 10, 1994, at San Diego. The four RBIs give Alou 353 for his career. ... The Expos lead the season series with Houston 9-3. ... With the win, the Expos matched last season's win total of 66. ... Berry, traded to Houston by Montreal in the offseason, is 12-for-33 (.364) with two homers and nine RBIs for the Expos this season.