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5/18/2013 1:45 P.M. ET

Mets appealing earned-run call from Friday

CHICAGO -- The Mets are appealing to Major League Baseball to have Matt Harvey's second first-inning earned run from Friday's game switched to an unearned run.

On the play, Starlin Castro was on third base and Anthony Rizzo was on second base when Alfonso Soriano hit a ground ball sharply up the middle. Ruben Tejada ranged to his left, spun and his throw to first base got away from Ike Davis.

It was ruled a single, with a throwing error charged to Tejada that allowed Rizzo to also score behind Castro. Nate Schierholtz flew out to center field for the second out of the inning before Luis Valbuena struck out swinging.

"I didn't think it was an earned run," Mets manager Terry Collins said.

If the ruling is reversed, Harvey would only be charged with the one earned run in his 7 1/3-innings outing, dropping his ERA from 1.55 to 1.41. He entered Saturday fifth in the Majors in ERA, but the appeal would move him up to third.

Harvey leads the Majors with a 0.72 WHIP and a .149 opponents' batting average.

Collins impressed by Parnell's performance

CHICAGO -- Terry Collins has been impressed by Bobby Parnell this year, perhaps so much so that he wanted to actually hold the closer back from an early appearance on Friday.

With two outs and the Cubs threatening in the eighth, Collins opted to go to right-hander Greg Burke instead of the right-handed Parnell, though Parnell would come in and close out the game with a perfect ninth.

"We talked about it," Collins said. "Matter of fact, [pitching coach Bob Warthen] said, 'Get Bobby up.' And I said, 'I can't.'

"I know that he's starting to get a little fatigued. He's fine to pitch, but that's why I'm going to try to keep him away from multi-inning save situations -- because it's still May and this guy's pitched so many games that aren't closing [situations]."

Parnell is a perfect 4-0 this year with a sterling 0.98 ERA and 16 strikeouts in 18 1/3 innings. He has five saves.

"I'm very, very proud of Bobby Parnell," Collins said. "From where he was two years ago, when we had to slide him into the closer's role after K-Rod [Francisco Rodriguez] got traded. He really had a tough time. But the way he's developed his demeanor and changed his demeanor on the mound -- we all said, 'He had stuff. Once he learns how to deal with it, he's going to be really good.' And that's where he's at. And he did it fast."

Three of Parnell's 18 appearances have been more than one inning. He's entered in the eighth inning three times, and twice to start the 10th.

"He wants to be out there," Collins said. "Right now, he wants to be out there when the game's on the line. And he doesn't care if it's the seventh inning, the eighth inning or the ninth inning."

Worth noting

• Jenrry Mejia made his first rehab start for Class A St. Lucie at Bradenton on Friday night. He threw three innings, allowing five hits, two runs and three walks, while striking out six.

Mejia is on the 60-day disabled list with right elbow tendon inflammation.

• According to the Elias Sports Bureau, Harvey on Friday became the first Mets starter to earn a win and drive in a go-ahead run in the seventh inning or later since Sid Fernandez on Aug. 16, 1993, in Cincinnati.

• Since he was recalled from Triple-A Las Vegas, Burke has allowed just one hit in 2 2/3 innings of work, striking out one and walking none.

"In the three games he's pitched since he's been back, I've seen much more confidence in his stuff -- much more confidence in his delivery," Collins said. "This is a new thing to him. But I thought the ball is getting more movement to it than it was before. I think his offspeed stuff is better than it was in the beginning."

Joey Nowak is a reporter for MLB.com. Follow him on Twitter at @joeynowak. This story was not subject to the approval of Major League Baseball or its clubs.