jon nieseIncluding this weekend’s 11-2 flameout loss to Pittsburgh, the Mets have lost Jon Niese’s last five starts, with him giving up 22 runs and not getting out of the fifth inning in three of them. He has not come close to resembling what the Mets think he should be, and that’s the No. 1 starter in their rotation.

The first game in that slide, April 18 at Colorado, and the one preceding it, April 12, at Minnesota, were played in temperatures in the high 20s.

I spoke personally to manager Terry Collins about that and he said the cold might have had a residual effect on Niese.

“I think there might be. He’s had some stiffness in his back,’’ Collins said when asked if there is a connection between working in the cold and his following ineffectiveness. “He’s had trouble getting loose and (prior to his May 5 start at Atlanta) he didn’t have a good bullpen session.’’

The only thing surprising about this issue with Niese is the injury wasn’t worse and there haven’t been more weather-related injuries. This has always been one of my pet peeves about playing in lousy weather. The owners have such steep investments in their players, and yet they have no qualms about playing games in precarious conditions. This is also an issue the Major League Baseball Players Association has glossed over. Playing conditions have never been high on the MLBPA’s pecking order in negotiating with the owners.

It’s usually about money and drug testing, but working conditions somehow get ignored.

Niese, who gave up eight runs in 4.1 innings in his start Saturday against the Pirates, said to compensate for the soreness and stiffness he developed the bad habit of dropping his arm angle during his release. Consequently, hitters have been able to pick up the ball out of his hand earlier.

“I think it’s to the point now where I created a bad habit with dropping down my arm angle, and I’m kind of opening everything up,’’ Niese said, adding he wasn’t bothered by pain today. “It’s something I’m going to work on in the bullpen to get it back.’’

Niese said there’s no deception in his delivery and hitters aren’t chasing the pitchers they normally might. They are able to pick up his release point earlier, and that split second makes a tremendous difference to the hitters.

Niese is hopeful of working his release point issue out in the bullpen this week before making Thursday’s start in St. Louis against Adam Wainwright.

His 5.93 ERA clearly shows that Niese is currently not the same pitcher who the Mets signed to a five-year deal before the start of last season. If things are going to get any better for the Mets, they’ll need the Jon Niese they thought they were getting.