BOSTON - For one night at least, the post-trade deadline Yankees looked similar to the pre-deadline ones.

And that, if you needed reminding, is not a good thing.

Chris Capuano pitched OK in his second Yankees start, but once again, like most of his fellow starters, he received little run support in a 4-3 loss to the last-place Red Sox in front of 37,782 at Fenway Park.

"We're trying," Carlos Beltran said of the lack of offense.

The Yankees (55-53), who had only six hits -- including homers by Beltran and Derek Jeter and an RBI single by Beltran -- lost for the fifth time in six games and fell six games behind the AL East-leading Orioles.

It has not been a good start to a trip that began with two losses in three games against the Rangers, who have the majors' worst record at 43-66. The win lifted Boston to 49-60. "We definitely do because we're chasing people," Joe Girardi said. "We're missing some pretty good opportunities."

advertisement | advertise on newsday

Anthony Ranaudo won his major-league debut, allowing two runs, four hits and four walks in six innings.

"I believe this offense is capable of doing a lot more," Girardi said, not for the first time. "We've struggled at times this year but I just believe we're capable of doing more, and hopefully it starts [Saturday].''

Stephen Drew, acquired by the Yankees less than an hour before the 4 p.m. trade deadline Thursday, started at second base for the first time in his career, batted eighth and went 0-for-4. He didn't have too many tests in the field, though he didn't make a great relay throw on a potential double-play ball hit by Dustin Pedroia to Jeter. He did make a good pivot in the eighth, helping to turn a 5-4-3 double play.

Martin Prado, also acquired late Thursday afternoon, arrived at the ballpark just before 6 p.m. and pinch hit for Ichiro Suzuki in the seventh. Prado bounced to third for the inning's second out and struck out against Koji Uehara in the ninth.

"It's so exciting to play in this kind of division," said Prado, who replaced Ichiro in right. "I'm looking forward to making the playoffs and getting a ring. I'm so excited to play with Jeter and all these guys."

Capuano, who was 1-1 with a 4.55 ERA in 28 relief appearances with the Red Sox this season before being released July 1, allowed four runs and eight hits in 61/3 innings. After allowing a leadoff single by Mookie Betts in the seventh and a sacrifice by Brock Holt, he was replaced by Shawn Kelley, who promptly allowed an RBI single by Pedroia that gave the Red Sox a 4-2 lead.

"I put us behind the eight-ball early, giving up those runs early," said Capuano, who allowed two runs in the third that put him in a 2-0 hole. "But we were right there and had a chance to win."

Jeter's third homer of the season, a shot over the Green Monster in left-center off Junichi Tazawa to lead off the eighth, made it 4-3. Jacoby Ellsbury followed with a long drive to center, but Betts sprinted back into the triangle and made a leaping, sprawling catch to rob him of an extra-base hit. Mark Teixeira then blooped a ground-rule double down the leftfield line but was stranded. Uehara pitched a scoreless ninth for his 22nd save.

"It's frustrating," said Chase Headley, a July 22 acquisition who made two fine stops at third base but went 0-for-4. "We've got to win games because this is a good team . . . We're capable of doing more. I think we will do more.''

With David Lennon