A pair of highly-touted rookies square off on Wednesday when the New York Mets return to Citizens Bank Park for the middle game of a three-game series with the Philadelphia Phillies.

The Mets start first-year righty Matt Harvey, a 23-year-old Connecticut native making the seventh start of his initial big-league stint, while the Phillies turn to right-hander Tyler Cloyd, who will make his big league debut in place of an ailing Cole Hamels.

Harvey, a 6-foot-4, 225-pounder, tossed 5 1/3 scoreless innings in a 3-1 defeat of Arizona in his debut on July 26, then dropped three straight starts to San Francisco, San Diego and Atlanta between July 31-Aug. 10.

He scored a second win at Cincinnati on Aug. 18 and got a no-decision in an Aug. 22 meeting with Colorado while combining to allow seven hits and two runs across 13 2/3 innings of work.

Harvey has permitted a .186 opposition batting average in 36 combined innings.

Cloyd, meanwhile, was just named the International League's Pitcher of the Year on Tuesday, going 12-1 with a league-leading 2.35 ERA for Triple-A Lehigh Valley.

In addition to his 3-0 record in four starts at Double-A Reading, Cloyd is 15-1 with a 2.26 ERA. The 15 wins are tied for the most in minor league baseball this summer.

His franchise-record 12 wins trail only the 14 by Syracuse's Zach Duke in the league.

On Tuesday, Ike Davis hit a go-ahead RBI double during a four-run 10th inning and the Mets came back to defeat the Phillies, 9-5.

Davis, who hit a walk-off homer against the Houston Astros on Sunday, drove in David Wright with a double to the left-field gap against B.J. Rosenberg (0-2).

Lucas Duda followed with an RBI single before Kelly Shoppach helped send the Mets to their third consecutive win with a towering homer into the seats in left field.

"They're gonna play it out," Mets manager Terry Collins said. "There's guys playing for jobs, there's guys playing for careers and there's still a lot of fight."

Bobby Parnell (4-3) tossed two scoreless innings of relief to earn the victory.

The Mets won eight of the first 12 games between the teams in 2012, including two of three in the most recent series in New York from July 3-5. Philadelphia took the 2011 season series, 11-7.