David Ortiz, John Lackey lead Boston past Arizona 8-5

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Arizona Diamondbacks watch from the bench as Boston Red Sox closer Jonathan Papelbon pitches in the ninth inning of a baseball game, Thursday, June 17, 2010, in Boston. The Red Sox won 8-5. (AP Photo/Michael Dwyer) By Michael Dwyer Arizona Diamondbacks watch from the bench as Boston Red Sox closer Jonathan Papelbon pitches in the ninth inning of a baseball game, Thursday, June 17, 2010, in Boston. The Red Sox won 8-5. (AP Photo/Michael Dwyer) By Michael Dwyer

BOSTON -- David Ortiz hit a two-run homer and Marco Scutaro had three RBIs as the Boston Red Sox beat the Arizona Diamondbacks 8-5 on Thursday night.

John Lackey (8-3) pitched six innings as Boston became the only team with three eight-game winners. The right-hander labored through 112 pitches and earned the win when Adrian Beltre hit an RBI single in the sixth that gave the Red Sox a 5-4 lead.

Scutaro added a sacrifice fly in the inning, driving Dan Haren from the game.

Arizona extended its club record to 13 consecutive road losses, a streak that began after a May 17 win at Florida.

The victory gave Boston a three-game sweep and followed wins by Clay Buchholz (9-4) and Jon Lester (8-2).

Lackey allowed three earned runs and eight hits.

The Diamondbacks' road trip will continue Friday in Detroit.

(Copyright 2010 by The Associated Press. All Rights Reserved.)