PITTSBURGH — Derek Lowe held Pittsburgh to five singles over seven effective innings to remain unbeaten in his career against the Pirates, and the Los Angeles Dodgers edged closer to the NL West title with a 6-2 victory Tuesday night.

Casey Blake homered and tripled his first two times up after sitting out the Dodgers' 8-2 win Monday night with lower back stiffness. Manny Ramirez had three hits for the second successive night, including an RBI double in a four-run second inning.

The Dodgers won their 14th in 16 games and lead Arizona by 4Z\x games in the NL West with 11 to play.

A questionable call aided the Dodgers' second, when Lowe, lumbering down the line, appeared to be out by a step on his sacrifice bunt. Pirates pitcher Jeff Karstens nearly threw it away, but TV replays showed second baseman Freddy Sanchez, covering first, managed to scoop up the ball before the runner arrived. Umpire Tim Timmons called Lowe safe.

The Dodgers already had a run in on Blake's 10th homer, then scored three more times following the one-out call at first..

Lowe (14-11) didn't need much run support, though he rarely does against the Pirates — he is 6-0 in six career starts against them. He struck out three, walked none and was in trouble only in the fourth when the Pirates, down 4-0, scored on consecutive singles by Sanchez, Nate McLouth and Ryan Doumit to start the inning. Lowe recovered to get Brandon Moss to ground into a double play and retired 11 of his final 12 batters.