New York Mets pitcher Matt Harvey will undergo season-ending shoulder surgery, the MLB team confirmed on Friday.
Harvey was placed on the 15-day disabled list on Wednesday due to discomfort in his right shoulder and was diagnosed with symptoms consistent with thoracic outlet syndrome.
The 27-year-old voiced his frustration via Twitter following the news, writing: "I'm extremely disappointed to learn that I'll be out for the season, but I'm relieved to have answers and get back to doing what I love.
"I hope you'll understand if I stay out of touch & stick to the business of getting healthy.
"I know how strong and determined my teammates are, and I will stand behind them for the rest of the season!"
Something seemed amiss on Monday, when Harvey allowed six runs (five earned) on 11 hits in 3.5 innings against the Miami Marlins.
The Mets, though, are hopeful Harvey will be good to go for the 2017 season.
"He's optimistic. He's disappointed," manager Terry Collins said. "He just said, 'I'm disappointed in the way I pitched, and I hope this cures me and we get back on track.' He was disappointed, but at the same time relieved that this thing, now we have an answer."
Harvey was posting the worst numbers of his four-year career. His year ends with just four wins to an National League (NL)-leading 10 losses, and his 4.86 ERA and 1.47 WHIP both mark career highs. The Mets went 6-11 in games he started.