Jason Bay had an eight-RBI game for the second time in less than a year and the Pirates ran their winning streak to seven by beating the Milwaukee Brewers, 13-2, last night for a doubleheader sweep in Pittsburgh.

Tony Alvarez's grand slam supported another strong start by Oliver Perez in the opener, an 8-1 Pirates victory that ended Milwaukee's five-game winning streak. The Pirates are on their best spurt since winning eight in a row from Sept. 1-8, 2000.

Bay, acquired with Perez in the Brian Giles trade with San Diego a year ago, had three two-run doubles and a two-run homer, matching the eight RBI he had Sept. 19 against the Cubs. His doubles came in the third, fifth and eighth innings.

Bay's big night included a disputed homer -- his 10th, the most of any NL rookie -- off Jeff Bennett in the seventh. Bay's drive bounced off a fan's hands in the first row of the bleacher seats, and left fielder Geoff Jenkins immediately sought an interference call.

The umpires huddled briefly before signaling home run, causing Brewers Manager Ned Yost to argue unsuccessfully for several minutes.

Bay had nine RBI in the doubleheader and is hitting .299 with 34 RBI despite missing the first month of the season after shoulder surgery.

* INDIANS 15, REDS 2: Ronnie Belliard hit the first of Cleveland's four homers, clearing the way for Japanese college star Kazuhito Tadano to win his first start for the visiting Indians.

Tadano, who was shunned by Japanese pro teams aware that he had appeared in a gay porn video, struck out a career-high 10 in seven innings. It was the most strikeouts by an Indians pitcher since Chuck Finley fanned 10 Tigers on May 28, 2002.

* CUBS 6, WHITE SOX 2: Carlos Zambrano settled down after a shaky first inning -- benefiting when umpires reversed an initial call and ruled a grand slam foul -- and pitched the Cubs to victory at Wrigley Field. Zambrano (9-3) allowed two hits in 61/3 innings before leaving in the seventh with a cramp in his right forearm after throwing 123 pitches.

* EXPOS 2, BLUE JAYS 0: Livan Hernandez pitched a four-hitter for his fourth complete game of the season, leading Montreal to victory in what could be the Expos' final homestand in Puerto Rico. Tony Batista drove in two runs for the Expos, who were scheduled to play 22 games in San Juan for the second straight season. Major League Baseball hopes to select a new permanent home for the team later this year. The game drew 8,220, well below the 19,000 capacity at Hiram Bithorn Stadium.

* METS 11, YANKEES 2: Kaz Matsui homered twice and drove in five runs as the Mets stopped Mike Mussina's eight-game winning streak, roughing up the Yankees at Shea Stadium in their highest-scoring game of the season. Derek Jeter started for the Yankees, a day after a dangerous dive into the stands sent him to the hospital. The all-star shortstop came back with a purple welt under his eye, a bandage on his stitched-up chin and a bruised shoulder.

* BRAVES 6, RED SOX 3: Nick Green hit a tying sacrifice fly off Keith Foulke in the 10th, then hit a three-run homer off Anastacio Martinez in the 12th to give host Atlanta the win over the reeling Red Sox. A night after Boston couldn't hold a 4-3 lead in the 13th inning of a 5-4 loss at Yankee Stadium, the Red Sox stumbled again. Boston, which trails New York by 81/2 games in the AL East, has dropped four straight and 9 of 12.

* ASTROS 7, RANGERS 5: Morgan Ensberg hit a two-run homer in the eighth, his first of the season, to lead Houston to victory at home.

* ROCKIES 9, TIGERS 8: Charles Johnson's three-run homer with two outs in the ninth tied the game, and host Colorado scored twice in the 10th on bunt singles, ending a five-game losing streak.

* PADRES 7, ROYALS 5: Phil Nevin homered in consecutive at-bats and Humberto Quintero, Brian Buchanan and Brian Giles also connected to lead host San Diego to victory.

* DEVIL RAYS 4, MARLINS 2: Aubrey Huff homered and drove in three runs to help visiting Tampa Bay beat Carl Pavano and struggling Florida.

* GIANTS 7, ATHLETICS 3: Barry Bonds hit his third homer in three days and Ray Durham hit two homers and drove in a career-high five runs in San Francisco's home win.

* TWINS 6, DIAMONDBACKS 5: Danny Bautista's error allowed Luis Rivas to score in the ninth and give visiting Minnesota the win in Al Pedrique's debut as the Diamondbacks' manager.

* ANGELS 7, DODGERS 3: Tim Salmon and Robb Quinlan each drove in two runs and host Anaheim used a five-run first to beat Los Angeles and end a four-game losing streak.

* CARDINALS 11, MARINERS 2: Woody Williams came back stronger after a two-hour rain delay, combining with three relievers on a six-hitter in the home win for St. Louis.

Reds catcher Jason LaRue puts the tag on the Indians' Ronnie Belliard, who tried to score from third on a grounder. Kazuhito Tadano struck out 10 to lead Cleveland to a 15-2 victory.