By RONALD BLUM
AP Baseball Writer

NEW YORK(AP) -- It's hard to know what to expect from A.J. Burnett
come the playoffs.

Will it be the dominant pitcher who went 5-0 with a 2.01 ERA
from June 27 to July 27? Or will it be the struggling starter
who is 1-5 with a 6.19 ERA since?

"You do want him to get on a roll. It's important for us,"
Yankees manager Joe Girardi said following Burnett's latest
unfruitful outing, a listless 7-3 loss Saturday to the Baltimore
Orioles.

Brian Roberts hit a grand slam in a six-run second inning and
tied a franchise record with his 51st double. That backed rookie
Brian Matusz (5-2), who allowed one run and four hits in seven
innings to win his third straight start.

New York lost consecutive games for the first time since Aug.
16-17 at Seattle and Oakland - and dropped back-to-back games at
home for the first time since June 17-18 against Washington.

A day after surpassing Lou Gehrig for the Yankees career hits
lead, Derek Jeter received more standing ovations and went 1 for
5 to leave his total at 2,724. But back on the field less than
12 hours following the end of Friday night's rain-delayed 10-4
loss, New York (91-52) was flat.

"We have not clinched anything or won anything yet," Jeter said.
"Our focus has always remained to try to win games and win the
division, so that's what everyone's looking forward to."

Burnett (11-9) allowed six runs and seven hits in seven innings.
Staked to a lead by Mark Teixeira's first-inning sacrifice fly,
he gave up Nolan Reimold's leadoff homer in the second -
Baltimore's first home run in 42 2-3 innings since Reimold
connected off Texas' Kevin Millwood on Sept. 5.

A walk and three singles put the Orioles ahead, with Robert
Andino driving in the go-ahead run, and Roberts homered on a
slider left over the plate. It was the third slam at new Yankee
Stadium - all by visitors.

"It was a bit of surprise to have that big an inning," said
Roberts, who went 3 for 4 and finished a triple shy of the
cycle.

Burnett appeared far from ready to follow CC Sabathia and start
Game 2 or 3 of the postseason next month. He has allowed a
career-high 24 homers, yet doesn't think he's been that far off.

"I left one over, you know, a little too much at the wrong
time," he said. "It's been one mistake here or there."

While Burnett retired 17 of 19 batters after the slam, three of
the first five outs during that stretch were flies to the
warning track. Catcher Jose Molina said Burnett might be tired
at this point of the long season.

"That's a question a lot of people have got to ask," he said. "I
don't think he's tired. I don't think he needs a rest. I think
he's 100 percent ready to go because to me he seems like he's
battling every time."

Matusz, a 22-year-old left-hander, was making his eighth career
start and first against the Yankees.

"I thought it was the best start of the year. The atmosphere,
that was really cool, with the first guy I'm facing being Jeter,
but I was able to relax," he said. "I felt it a little bit. It's
every kid's dream to pitch at Yankee Stadium."

Matusz impressed a team that leads the major leagues with 816
runs.

"He was moving the ball in and out. He was mixing his breaking
balls, changeup," Jeter said. "He was never really in trouble."

While the Orioles are last in the AL East at 58-83, outings by
Matusz and 21-year-old rookie Chris Tillman on Friday gave them
a lift.

"It makes you feel good heading into the last few weeks of the
season about what the future possibly holds," manager Dave
Trembley said.

NOTES: Roberts has five slams. He also hit one Aug. 20 off Lance
Cormier at Tampa Bay. ... Cleveland's Grady Sizemore and
Asdrubal Cabrera hit slams in the first series at the ballpark.
... Roberts also hit 51 doubles last year and shares the
franchise record with Baby Doll Jacobson (1926 St. Louis Browns)
and Beau Bell (1937 Browns). ... Yankees LF Johnny Damon missed
his second straight game because of a stiff back and hamstrings.
Yankees manager Joe Girardi said Damon likely will start Sunday.
... Removal of the facade in the outfield at old Yankee Stadium
began last week.