Chicago ? Moises Alou is in his third season playing the tricky left-field position at Wrigley Field, and it still causes him problems.

So imagine how difficult it is for Craig Biggio, who just switched to left four games ago when the Houston Astros acquired Carlos Beltran.

Biggio dropped Alou’s fly ball in the seventh Tuesday night, allowing two runs to score and sending the Cubs to a 7-5 win over the Astros.

“We got a break there. He’s going to have a tough time moving to left,” Alou said.

“I’m not going to make any excuses. I should have made the play. I didn’t do it and it cost us the game,” Biggio said. “Nobody feels worse in here than I do. It hit on the heel of my glove. I should’ve caught it, simple as that.”

Alou earlier made a two-base error of his own, knocking a ball into the ivy with his glove, as Houston took a 4-1 lead in Andy Pettitte’s first start in a month.

“It was as weird as heck out there. Twilight Zone field,” Cubs manager Dusty Baker said of the play in left.

Dodgers 2, Giants 1

Los Angeles — Jayson Werth tied the game with a homer and scored the go-ahead run on Paul Lo Duca’s eighth-inning single, leading Los Angeles over San Francisco. Werth, who tied it in the fifth with his fourth home run, greeted reliever Jim Brower (5-5) with a leadoff single in the eighth and advanced on a sacrifice by pinch-hitter Alex Cora.

Pirates 3, Cardinals 0

Pittsburgh — Rookie left-hander Sean Burnett shut out St. Louis for six innings in his first major-league victory, and Tike Redman drove in two runs to lead Pittsburgh past the division-leading Cardinals. Burnett (1-2), who received little run support in his first three career starts, outpitched Chris Carpenter (8-3) as the last-place Pirates beat the Cardinals for the second straight night after dropping 14 of 16 at home to St. Louis.

Padres 3, D’backs 2

Phoenix — Randy Johnson reached 4,000 career strikeouts and still couldn’t change Arizona’s luck. The Big Unit struck out eight to join Nolan Ryan (5,714), Roger Clemens (4,200) and Steve Carlton (4,136) as the only pitchers to fan 4,000 batters, but the Diamondbacks lost their franchise-record 11th straight game.

Johnson (9-6) reached the milestone the quickest by striking out Jeff Cirillo for the second out of the eighth. He got there in 3,2371/3 innings, a strikeout-to-inning ratio of 11.12. None of the others had a double-figure ratio.

Mets 7, Reds 5

Cincinnati — Cliff Floyd hit two of New York’s three homers off Todd Van Poppel, driving in four runs and leading the Mets over Cincinnati. Ty Wigginton added a two-run shot as the Mets rebounded from their doubleheader sweep by the Yankees on Sunday. They’ve won two of their last six games overall. Jae Seo (4-5) and four relievers held on.

Marlins 5, Braves 4

Atlanta — Mike Lowell and Miguel Cabrera hit back-to-back homers, and Florida overcame a shaky start by Dontrelle Willis to beat Atlanta. Lowell also doubled and scored a run during a three-run first inning for the Marlins, who won for only the second time in six games.

Brewers 6, Rockies 3

Denver — Chad Moeller hit his first career grand slam, Chris Capuano pitched six strong innings and had his first RBI, and Milwaukee ended a nine-game losing streak in Colorado. Milwaukee had nine hits and took advantage of nine walks by Colorado’s pitchers — the Brewers didn’t swing at a pitch until Lyle Overbay hit a sacrifice fly on the game’s 18th pitch — to win in Denver for the first time since Sept. 3, 2001.

Phillies 17, Expos 7

Philadelphia — Bobby Abreu and David Bell each homered and drove in three runs, and Philadelphia roughed up Montreal for the second straight night. The Phillies had 17 hits, batted around twice and got at least one hit and a run from everyone in their starting lineup except Jim Thome.