Jazz Chisolm, Jr., didn’t let Casey Mize get into his new repertoire right away.

The Yankees’ leadoff hitter lined his first pitch Sunday right to right fielder Wenceel Perez. But with No. 2 hitter, veteran first baseman Paul Goldschmidt, Mize got to unveil some of his new toys.

He and Goldschmidt engaged in an eight-pitch battle. Mize showed the improved fastball — climbing the velocity ladder from 96, 97, 97.5 and 98 mph. He showed the new sweeping slider and the harder, 90- mph splitter.

But, finally, on a 3-2 pitch, Mize went back to his old faithful. He broke off a traditional slider and froze Goldschmidt — called strike three.

“I feel comfortable throwing that pitch for a strike at any point,” said Mize, who struck out three in two scoreless innings in the Tigers’ 4-0 spring win over the Yankees at George Steinbrenner Stadium. “I thought he was looking for a fastball and I proved myself right.”

Mize flashed the improved fastball velocity last season but took it up another notch. He sat at 96.9 mph, 1.4 mph up from last year’s average. What was new, though, were the 90- mph splitter (nearly 4 mph firmer than last year) and three different shapes of sliders.

“Last September I started getting better results on the splitter and that went handin-hand with the velo uptick,” Mize said. “I watched other guys, too. Nathan Eovaldi throws that pitch really hard and has success with it. So I’m trying not to get too much in my head about how that pitch moves anymore. I’m just trying to throw it hard.

Dillon Dingler, who caught Mize, praised not only the shapes but his command.

Of his 34 pitches, 24 strikes. He threw six firstpitch strikes to the eight batters he faced.