With their five-year reign atop the NL East almost certain to end, the Philadelphia Phillies are trying to find key pieces on offense for next season.

Domonic Brown is showing that he may be someone the Phillies can count on in the outfield.

Brown homered, doubled and made two stellar defensive plays in the Phillies' 3-2 loss to Bronson Arroyo and the Cincinnati Reds on Wednesday night.

"I'm just trying to do whatever I can for the team," Brown said.

A much-heralded prospect, Brown was called up in 2010 but didn't find much playing time and struggled — especially in the field — when he did. But he has played well since being recalled from Triple-A Lehigh Valley on July 31, batting .282 with a homer, six doubles and 11 RBIs in 78 at-bats while hitting safely in 17 of 22 games.

Brown was a bright spot for Philadelphia on Wednesday, launching Arroyo's first pitch — a 90 mph sinker — in the fifth inning deep into the seats in right field for his first homer of the season and eighth in 324 career at-bats.

"I really didn't know a lot about him," Arroyo said. "I threw a sinker and he hit it out of the park. I had no history on him."

The Phillies, who dropped 10 games below .500, are trying to find out quickly what they have in Brown and other reserves heading into next season.

"We're going to need some pieces in our offense but that's why some guys are getting to play, to see if we can take a better look at some of these guys we've got," Philadelphia manager Charlie Manuel said. "I'll even play them more. We want to see what we've got.

"We're definitely going to need some pieces on offense and we don't know exactly who they are right now. It's kind of up for grabs. This is a good chance. We should get a real good read then."

Brown showed something on Wednesday, but the other Phillies couldn't do much against Arroyo.

Arroyo allowed three hits in eight-plus innings, and Jay Bruce homered to lead the Reds their 10th win in 13 games, moving them a season-high 27 games over .500

Arroyo (10-7), who gave up both runs while striking out four and walking none, retired the first 14 batters before Brown's two-out homer. Brown doubled off the wall in right-center with one out in the eighth and pinch-hitter Kevin Fransden reached on an infield single leading off the ninth for the other hits off Arroyo.

"I had good stuff," Arroyo said. "I was hitting my spots on both sides of the plate. It's one of the best games I've thrown."

Other than that, the Phillies didn't have anything close to a hit off Arroyo, who was 0-6 with a 9.46 ERA in his last seven regular-season starts against the Phillies. But Arroyo has been hot lately, improving to 6-1 with a 3.50 ERA in his last seven starts.

"He pitched a great game," Cincinnati manager Dusty Baker said. "Low pitch count, great location, used all his pitches and the defense played great behind him. No walks was the key. You can't walk people in this ballpark."

Aroldis Chapman relieved Arroyo after Fransden's hit. Fransden went to second on Chapman's wild pitch and scored on pinch-hitter Ty Wigginton's one-out single to right. Wigginton's broken bat caromed into the back of Chapman's left leg and the lefty limped around but remained in the game after a visit from the trainer. Chapman then got Chase Utley to fly out and Ryan Howard to line out sharply to left for his 31st save in 35 chances.

Run-scoring singles by Drew Stubbs and Ryan Ludwick in the fifth inning off Philadelphia starter Vance Worley staked Cincinnati to a 2-0 lead.

Worley (6-9) allowed two runs and eight hits in six innings. It was Worley's third straight loss but the longest outing in four starts for the righty, who has one win in his last seven starts.

"Things just haven't gone our way," said Worley, who was noticeably frustrated on the mound. "If it can go wrong for us, it goes wrong. I want to win; nobody likes losing. I need to do a better job of hiding (his frustration), but it's been a long season."

Bruce led off the eighth and gave the Reds a 3-1 lead with a towering homer off the concrete wall below the second deck in right off right-handed reliever Josh Lindblom.

Brown lost Bruce's pop fly in the lights in the fourth inning, leading to a triple. But the right fielder made two strong defensive plays, a full-out sprinting dive to his right to rob Arroyo of extra bases in the second and an excellent throw to nail Bruce at the plate trying to score on Todd Frazier's medium fly ball in the fourth.

"I already messed up a ball and was trying to make a play for Vance," Brown said.

Philadelphia got two runners on base in the eighth when Placido Polanco followed Brown's double by reaching on third baseman Scott Rolen's fielding error. But the Reds ended the inning with a sensational double play on Brian Schneider's grounder up the middle. Shortstop Zack Cozart ranged behind the bag at second, fielded with his glove and flipped to Brandon Phillips. Phillips jumped and caught the ball, then spun in one motion for a one-hop throw to first that was cleanly picked by Frazier.

Notes: The Reds are 27-11 without Joey Votto, who has been on the DL since July 17 with a left knee injury. ... After winning seven straight against the Reds, Philadelphia has lost two straight to Cincinnati. ... On Retro '90s Night, the Phillies wore maroon and white pinstriped uniforms from the 1991 season. ... Phillies lefty Cole Hamels (14-6, 2.94) is scheduled to face Cincinnati righty Johnny Cueto (16-6, 2.44) Thursday night in the conclusion of the four-game series.