NEW YORK — In a blow to the streaking New York Mets, right-hander Kodai Senga hit the 15-day injured list with a left calf strain he suffered during his season debut Friday, the club announced Saturday.

Senga suffered the injury running off the mound to give his infielders room to field an infield popup in the sixth inning of the Mets’ 8-4 win over the Atlanta Braves. He immediately grabbed his left calf, dropping to the ground in pain, and was quickly pulled from the game.

The 31-year-old right-hander was cruising until that point, holding the Braves to two runs on two hits and one walk with nine strikeouts. His fastball touched 98 mph. His trademark forkball induced five whiffs. He threw 73 pitches, six fewer than he tossed in his fourth and final rehab start, and looked like the All-Star hurler from last year.

Senga’s performance and a seven-run third inning fueled the Mets’ fifth straight win and Braves sixth consecutive loss, a combination that vaulted New York into the top NL Wild Card spot and second place in the NL East over Atlanta. It’s a remarkable development considering the Mets were 10 games behind the Braves and in disarray in late May.

They’ve done it almost entirely without Senga, who was shut down with a shoulder injury less than a week after reporting to spring training. His return was prolonged by an injury setback and his dissatisfaction with his mechanics, leaving the Mets to navigate the first four months of the season without their projected ace.

Senga’s return was supposed to double as a pivotal deadline addition to a middling starting rotation after he posted a 2.98 ERA and finished second in NL Rookie of the Year voting last season. Instead, it was a 5 ⅓-inning cameo.

In corresponding moves on Saturday, the Mets optioned right-hander Eric Orze to Triple-A Syracuse, called up righty Tylor Megill and activated Ryne Stanek, who arrived in a trade with the Marlins on Friday.