CINCINNATI -- Reds outfielder Chris Dickerson had two surgeries on Monday afternoon to remove the broken hook on the hamate bone in his right hand and arthroscopic surgery to clean out his right wrist. Hand specialist Dr. Mohab Foad and team medical director Dr. Tim Kremchek performed the procedures.

Dickerson, who was placed on the 15-day disabled list Friday, is expected to be out 4-6 weeks.

Chapman battles through rough inning for win

CINCINNATI -- Cuban left-hander Aroldis Chapman endured the first rough inning of his brief pro career, but still emerged a winner for Triple-A Louisville on Monday night.

In a 20-7 Bats victory at Buffalo that snapped the team's nine-game losing streak, Chapman gave up six earned runs and nine hits over five innings with one walk, one hit batter and eight strikeouts. He threw 99 pitches, including 65 for strikes.

Louisville staked Chapman to an early 7-0 lead but Buffalo tapped Chapman for five runs, six hits - all singles -- and a leadoff hit-by-pitch in the bottom of the fourth inning. His offense staved off the comeback and Chapman left with a 13-6 lead. As a hitter, he went 2-for-2 with a third-inning RBI double and a walk.

In five starts for Louisville, Chapman is 2-1 with a 3.12 ERA. In 26 innings, he's allowed nine earned runs, 23 hits, 13 walks while striking out 30.

Heisey has rough Major League debut

CINCINNATI -- Following his first big league promotion on Friday, the only action Chris Heisey saw for the Reds over the weekend was watching from the third-base dugout in St. Louis.

That changed on Monday when Heisey arrived at Great American Ball Park to see he would make his Major League debut in right field against the Mets. Jay Bruce was getting a break.

"I'm pumped up," said Heisey, who was called up when outfielder Chris Dickerson went on the disabled list. "First I got called up here, and now I have a chance to start. About a week ago, you could have told me, and I'd say, 'Not yet. Maybe later in the year.'"

Heisey did not have a memorable first game, as he went 0-for-5. He had a chance to win the game in the bottom of the 10th with runners on first and second and two outs. But he fouled out behind first base to end the inning.

"I figured it was a good day -- our first day back home," Baker said, regarding when to get Heisey into a game. "It was a rough last few days, sleep and rest wise. Plus, [Mets starter Oliver] Perez is tough on lefties. Everything just factored in. I didn't want him sitting around too long without getting some action. There wasn't really a situation where I could pinch-hit him in St. Louis, because we were down a couple of games."

In 20 games for Triple-A Louisville, Heisey batted .241 with four homers and 13 RBIs. He came on stronger lately and was 14-for-47 (.298) over his last 11 games, including a seven-game hitting streak.

Heisey was the Reds' 17th-round pick in the 2006 First-Year Player Draft but steadily rose to become one of the organization's top players. He batted a combined .314 with 22 homers, 77 RBIs and 21 steals for Louisville and Double-A Carolina last season.

The last three days, Heisey just tried to soak in what he was seeing.

"I learned what they're trying to do -- pitchers to hitters," Heisey said. "I watched a lot of the pitchers, because I know we'll be seeing the Cardinals again.

"Until I looked at the board, I didn't know [I was starting]. Obviously, I was hoping to get a chance. No one wants to watch. Everyone wants a chance to prove themselves and to show they can play. I'm finally getting my chance."

Worth noting

Reds pitcher Homer Bailey celebrated his 24th birthday on Monday. Infielder Miguel Cairo will turn 36 on Tuesday. ... The Redlegs Run for Homer 5K will be held on Saturday June 5 with the start and finish at Great American Ball Park. Register online at www.reds.com/5K.