Pitcher Kevin Gausman of the Orioles made his major league debut Thursday night.

On Friday, it will be the Blue Jays’ Sean Nolin who will climb to the hill in the big leagues for the first time.

First time out — good or bad — is an experience that remains fresh in the memory of every big-league performer.

Jays closer Casey Janssen was asked about his first game, which was a start against the Orioles at the Rogers Centre, on April 27, 2006.

“I remember it like it was yesterday,” Janssen said of what proved to be a four-inning outing where he was saddled with the loss in a 7-5 defeat. “It was no fun.

“I was so nervous. I was just hoping the ball would make it to the catcher (Gregg Zaun). I just didn’t want to hit the back net or hit the fans out in the outfield, either.”

A tad nervous, perhaps?

“I was kind of in awe,” he recalled. “You think all that hard work and time and effort that you put into it. Of course, it’s a special day and I honestly couldn’t wait for it to be over.

“Hopefully, his (Nolan’s) nerves will be calmed down a little bit and he can pitch his game and pitch to his strengths and treat as much as he can like it Is just another baseball game.”