MLB standings, results.

NEW YORK — Mets pitcher Matt Harvey was suspended three days without pay by the team Sunday for an undisclosed violation of team rules, the latest hiccup for a club beset by problems on and off the field.

General manager Sandy Alderson announced the suspension in a brief statement before the game, shortly before Harvey was scheduled to start against the Marlins. Alderson said the righthander had been sent home, but declined further comment.

Left-hander Adam Wilk was called up from Triple-A Las Vegas to face the Marlins. In his first big league game since 2015, Wilk was hit hard, giving up six runs and eight hits in 32⁄3 innings.

The Mets said Harvey’s suspension took effect Saturday. Manager Terry Collins held a closed-door meeting with his team before Sunday’s game to talk about the penalty.

“We are going to keep it in house, the way it’s supposed to be,” Collins said. “We hope to put it behind us and move forward.”

The suspension removed Harvey from the 25-man roster. The Mets transferred injured pitcher Noah Syndergaard to the 60-day DL to open a spot on the 40-man roster for Wilk. The Mets also claimed lefty Tommy Milone off waivers from the Brewers — he was 1-0 with one save and a 6.43 ERA.

In his first season after having a rib removed in surgery to treat thoracic outlet syndrome, the 28-year-old Harvey is 2-2 with a 5.14 ERA in 35 innings. He is coming off two of the worst starts of his career, allowing 12 runs over 92⁄3 innings with eight walks in a pair of losses to the Braves.

It’s not the first time Harvey has been punished by the Mets for his behavior. He missed a mandatory team workout before the 2015 playoffs and was fined.