PITTSBURGH – Russ Ortiz shut out Pittsburgh for seven innings to win his sixth in a row and Chipper Jones homered for Atlanta’s only run off rookie Oliver Perez, leading the Braves past the Pirates 1-0 Wednesday night.

The game matched two streaking pitchers in Ortiz and Perez, neither of whom had lost since June, and two of baseball’s hottest teams – the Braves have won 21 of 28, the Pirates 21 of 29.

Ortiz (12-6) gained his 100th major league victory and improved to 7-0 against Pittsburgh in 10 career starts, despite allowing at least one baserunner in every inning. The Pirates had nine hits off Ortiz and 11 overall, only to strand 11 runners after scoring 36 runs in their previous five games.

The left-handed Perez (6-5), who’s only 22 but is fast developing into one of the NL’s best starters, was more in command than Ortiz except for one pitch – Jones’ 14th homer, a solo shot to left field with one out in the fourth.

Expos 7, Mets 4

MONTREAL – Tony Batista homered and drove in two runs, and Nick Johnson hit a go-ahead RBI double in the fifth in leading the Montreal Expos to a 7-4 win over the New York Mets.

Brian Schneider had two RBIs for the Expos.

Brewers 6, Cubs 3

MILWAUKEE – Chris Capuano pitched effectively into the seventh inning, and Bill Hall and Ben Grieve Homered to help the Milwaukee Brewers snap a four-game losing streak with a 6-3 victory over the Chicago Cubs.

Astros 6, D-backs 1

HOUSTON – Roger Clemens struck out eight and allowed one run in seven innings, leading the Houston Astros over the reeling Arizona Diamondbacks 6-1.