It was a chilly 39 degrees at first pitch as the Mets opened a three-game series at Wrigley Field on Tuesday night, and the Mets just couldn’t get hot in a 3-1 loss to the Cubs.

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In fact, the only thing that seemed to get heated for the Mets was Luis Rojas, who was ejected for the first time as manager.

After walking three consecutive batters in the fourth inning (six altogether in 3 2/3 innings), Mets starter Taijuan Walker was pulled from the game with the Mets trailing, 3-0. Walking off the mound, he had a few choice words for home-plate umpire John Libka and was ejected. Two innings later, his skipper joined him to watch the game from the clubhouse. Rojas was ejected after arguing with Libka following a called third strike to Michael Conforto.

“I don't wake up and prepare to come to the ballpark to get thrown out,” Rojas said. “That's not what I desire. Just the game, it takes moments like this when you're emotional in the middle of it and you want to stand up for something that you think that has been done against you.”

In between the ejections, Rojas lost a challenge in the bottom of the fourth inning, when Jason Heyward stole second base. Heyward scored on an RBI single, which was followed by a bases-loaded walk to score the third run for the Cubs.

A 432-foot solo home run in the top of the fifth by J.D. Davis was the only run the Mets produced. Davis, who had his first multihit game of the season, accounted for two of the Mets’ six hits.

Davis also had the first multierror game of his career.

“It's not my first error I've ever made at third and it's probably not gonna be the last one,” Davis said. “We're all human, and I think we're all gonna make mistakes. That's part of learning the position over there and getting comfortable. Even Gold Glovers sometimes don't go errorless throughout the season.”

Davis’ first error came in the bottom of the third when he bounced a throw that first baseman Pete Alonso couldn’t glove. That allowed Willson Contreras to reach base with two outs and the first run to score off Walker.

In the fifth inning, Davis struggled to get rid of the ball on what should have been a routine play. After scooping up an infield hit by Kris Bryant, he took four steps before throwing late to Alonso at first.

“I’m not one to say, I don't take accountability. I'm my biggest critic, so, but it's one of those things you just, you know, not really used to,” Davis said. “It is what it is, you know, just make better throws.”

Rojas said that he didn’t break down the errors during the game with his third baseman.

“He kind of brushed it off and came up his next at-bat and homered,” Rojas said. “You know, so he didn't take it to his offense. He didn't want to do too much. He just stays locked in.”

The team, which ranks 10th in MLB with .986 fielding percentage, will take the field for defensive drills Wednesday, regardless of the weather, Rojas said.

“We know how innings can build up at a big league level,” he said, “when you give extra outs.”