Matz’s bad day could hurt value

The Mets may have missed their chance to sell high on Steven Matz.

In his first start back from the All-Star break, Matz had one of his worst outings of the season and continued his career-long second-half struggles, allowing a season-high nine hits, while matching a season-worst five runs allowed in a 7-6 loss to the Yankees in The Bronx.

Matz (4-8), who entered with a 5.50 ERA in 17 previous second-half starts, has now lost three straight outings.

“[My] stuff just wasn’t sharp. That’s the bottom line,” Matz said. “I couldn’t really command the fastball like I wanted to, breaking balls were up. I just wasn’t sharp overall. … I made a lot of bad pitches.”

Matz, who entered with a 2.91 ERA in 13 starts since the beginning of May and a 2.25 road ERA this season, opened with three scoreless innings but fell apart during a fourrun fourth inning in which the lefty received no help from center fielder Matt den Dekker on three catchable balls.

Matz lasted just five innings — his shortest outing since May 29 — and recorded three strikeouts with one walk while throwing 92 pitches (62 strikes).

“I thought he battled,” manager Mickey Callaway said. “His ball was kind of flat, running back out over the plate. He wasn’t able to get it in like we’ve seen him do effectively over the last two months, and that kind of cost him.”

Mets hitting coach Pat Roessler and designated hitter Asdrubal Cabrera were both ejected for arguing strikeout calls.

Roessler was tossed in the third inning by home-plate umpire Larry Vanover after engaging in a shouting match from the dugout, following a called third strike against Jose Reyes.

Then with two runners on in the fifth inning, third-base umpire Hunter Wendelstedt called Cabrera out on a check swing to end the inning — prompting the infielder to violently slam his bat to the ground — and then threw him out of the game.

“They’re grown men, and they had to say what they had to say and do what they had to do,” Callaway said. “They were just fighting to try and win a game.”

Tim Tebow’s potential rise to the majors was slowed as the Heisman Trophy winner was placed on the DL after leaving Thursday’s game at Double-A Binghamton with discomfort in his right hand.

Tebow will see a hand specialist in New York on Monday.

Michael Conforto hit his 12th home run of the season, and has now scored a run in five straight games.