Hours after he received his promotion to the Padres on Saturday, Mikolas entered his first Major League game. The 23-year-old right-hander pitched in the ninth inning of the Padres' 4-1 loss to the Marlins on Saturday night at Petco Park.
Against the first Major League batter he faced, Mikolas allowed a solo home run to Giancarlo Stanton on a full-count fastball.
That introduction to the Majors helped quiet Mikolas' jitters.
"I was like, 'Well, there it is. Welcome to the Major Leagues,'" Mikolas said. "Gotta get outs."
After the home run, Mikolas issued a walk to Gaby Sanchez before striking out John Buck looking. After Marlins starting pitcher Mark Buehrle laid down a sacrifice bunt, Mikolas ended the inning by striking out Jose Reyes looking.
"It felt good to get the first out, and to have it be a strikeout is nice," Mikolas said. "It's good for your confidence."
A native of Jupiter, Fla., Mikolas grew up a Marlins fan. Several of his friends and family members were able to catch Saturday's game on TV in Florida. He said his parents are planning trips to San Diego.
"It was great to know that I had that many friends and family watching the game," Mikolas said.
Mikolas joined the Padres on Saturday from Double-A San Antonio to give the club another reliever when closer Huston Street went on the disabled list for a strained right lat. Padres manager Bud Black said he likes Mikolas' stuff.
"That's a big curveball," Black said. "His challenge will be to get that in the strike zone. It has good rotation. You can combine that with a low-90s, mid-90s fastball. It's a nice variation. It's a nice difference of velocity. But the key is getting the breaking pitch in for a strike, because he's got enough fastball. There's no doubt about that."