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Terry Collins: Matt Harvey's struggles may be rooted in 'dead arm'

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Harvey shelled by Pirates

Matt Harvey surrenders a career-high seven runs over just four innings, and the Mets fall to the Pirates 8-2.

New York Mets manager Terry Collins, addressing the possible reasons behind one of Matt Harvey's worst career starts, says the ace may be dealing with apparent arm fatigue, or what Collins called "dead-arm stuff."

Harvey, in his first season since coming off Tommy John surgery, won't require a medical exam as a result of the apparent arm trouble, Mets assistant general manager John Ricco said, according to a New York Daily News report.

"I have not talked to Matt yet, but it looks like he might be going through some of that dead arm stuff that sometimes happens. This might help him to have an extra day to get him back on track," Collins said, according to the Daily News report, referring to the team's Thursday off day. "He's going to pitch Friday with five days' rest, be ready to go."

Harvey (5-2) lasted only four innings in an 8-2 loss to the Pirates on Saturday in the shortest outing of his career. He gave up a career-worst seven runs on six hits and also threw two wild pitches, matching the number he had all of the 2013 season. His ERA shot up to 2.91.

"Everything was kind of all over the place," Harvey said after the game. "I wasn't locating, obviously. My arm feels fine, my body feels fine. It was one of those days where if I tried to spin it, it was over the middle. If I tried to throw a fastball in, it was away and vice versa. It's just a pretty terrible outing."

Information from The Associated Press was used in this report.