PHILADELPHIA -- Forget the back-to-back sweeps. Forget the six-game losing streak at home. Forget the 1-8 record on the homestand.

The Phillies plan to forget. Beginning right now.

They simply refuse to dwell on what went wrong.

"We can make it through a lot," Greg Dobbs said. "We're a resilient bunch. This isn't going to get us down in any way."

Dobbs remained focused on the positives following Sunday's 2-1 Interleague loss to the Orioles before a sellout crowd of 45,256 at Citizens Bank Park.

Philadelphia mustered four hits and suffered yet another difficult loss to close out a tough homestand. The Phils dropped eight of nine against the Red Sox, Blue Jays and Orioles, including six straight on consecutive sweeps by Toronto and Baltimore.

Yet the Phils remain in first place in the National League East despite sporting a 13-22 record at home. They lead the Mets by two games as they head out for a nine-game road trip, beginning Tuesday against Tampa Bay.

Philadelphia is a Major League-best 23-9 on the road.

"Even though it's been a rough time the last six games, we're in first place," Dobbs said. "We'll take that on the road and hopefully continue to play well."

Brian Roberts gave the Phillies fits for the second successive game.

After a game-winning two-run homer Saturday night, Roberts singled in the winning run Sunday.

Robert Andino opened the eighth with a double, moved to third on a groundout and scored when Roberts laced Cole Hamels' pitch into center field.

Hamels pitched eight effective innings and allowed nine hits and two earned runs. The left-hander struck out 10, marking the 11th double-digit strikeout performance of his career and his first since June 11, 2008, at Florida.

But the Phillies didn't give him much run support.

"Teams get swept," Hamels said. "It's part of baseball. You don't want it to happen too often. It has happened twice in a row. We have to get on a plane and wipe it away in a new venue."

Baltimore starter Jeremy Guthrie was even better in his seven innings, giving up three hits and one run.

Without Ryan Howard, who was hospitalized with a high fever for the second time in two days, the Phillies' offense stalled. Howard was released from Mercy Suburban Hospital on Sunday afternoon, but didn't attend the game, ending his Major League-leading games played streak at 343, dating to May 25, 2007.

Despite a 103.9-degree fever on Saturday morning and a brief hospital visit, Howard arrived at the ballpark and crushed a dramatic three-run pinch-hit homer off Danys Baez in the seventh to temporarily put the Phillies ahead, 5-3. It was the fifth pinch-hit homer of Howard's career.

Phillies trainer Scott Sheridan said he received a text message from Howard at 6 a.m. ET on Sunday. Howard had a CT scan which showed a possible sinus infection, and he will be reevaluated Monday by Phillies team physician Dr. Marc Harwood.

Phillies manager Charlie Manuel was unsure of Howard's status for Tuesday's game against the Rays.

"I did not talk to him [Sunday]," Manuel said.

The Phils received an early lift from Dobbs in place of Howard. The fill-in first baseman connected on a solo homer to lead off the second inning.

In the sixth, the Orioles came back to tie it. Roberts doubled with one out, stole third and scored on a single to right by Adam Jones.

The frustration boiled over in the bottom of the eighth when Jimmy Rollins hit a chopper in front of the plate. Rollins appeared to elude the tag of Baltimore first baseman Ty Wigginton, but he was called out.

Manuel came out to argue with first-base umpire Larry Vanover and was ejected for the second time this season.

"The ump said he tagged him," Manuel said. "He said he saw that way. I said, 'You saw it the wrong way.'"

Many things have gone wrong for the Phillies lately, and they have dropped six straight at home for the first time since May 31-June 17, 2006.

"Baseball is baseball," Manuel said. "Things happen. It's hard to explain."