Byrd had three hits - including a homerun - scored four times and drove in three runs as the Phillies pounded out 16 hits and scored 10 times over the final three innings. "We put it together," Byrd said. "It's part of baseball. You go through your losing streaks and your winning streaks. We lost four in a row and tried to get back on track."
Polanco had four hits and scored three times and Bobby Abreu and Mike Lieberthal combined to drive in seven runs in the middle of the lineup. Philadelphia snapped a four-game losing streak that matched its longest drought of the season. "I'm glad it worked out for us today," Polanco said. "We lost four games in a row and it was tough for us. I'm glad we came back today and played a good game. Things don't go your way every day. Today, is just one of those days where everyone came out and played hard."
Philadelphia's Brett Myers (9-6) allowed four runs and eight hits in 6 1/3 innings. He walked one and struck out five. "Our offense played pretty well tonight," Myers said. "We hit the ball around and scored some runs. It's a good feeling to get a win here."
Montreal rookie Claudio Vargas (6-4) was tagged for six runs and eight hits in seven innings. "We just got beat up tonight," Expos manager Frank Robinson said. "We'll try to come out tomorrow night and win the series. We got beat up tonight. There's not much else you can say."
The Phillies scored twice in the third inning and led 3-1 after five innings. But the Expos got even in the sixth as Jose Vidro and Wil Cordero delivered RBI singles.
The game was tied in the seventh when Abreu followed an intentional walk to Jim Thome by drilling a 2-0 pitch over the right field wall. Abreu's 13th homer of the season staked Philadelphia to a 6-3 lead.
Montreal countered with a run in the bottom of the seventh but Jason Michaels and Byrd had RBI singles and Lieberthal chipped in a three-run double in a five-run eighth inning.
Byrd had a two-run homer - his second of the season - in the top of the ninth.
The series concludes Wednesday night when Kevin Millwood (9-6, 3.87) goes against Tomo Ohka (7-8, 4.70).