(John McDonnell/The Washington Post)

Nationals reliever Aaron Barrett was one of the biggest surprises of spring training, pitching 10 2/3 scoreless innings with eight strikeouts against zero walks. A lifelong minor leaguer, he cried when he learned he made the team and received congrats from teammates after he shared the news on Twitter.

Barrett’s excitement hadn’t waned by this morning.

But if the 26-year-old was nervous when he entered a 5-5 game in the bottom of the ninth inning, he didn’t show it, retiring the Mets in order with two strikeouts. The Nats scored four runs runs in the top of the 10th and Jerry Blevins eventually closed the door in the bottom half of the inning to give Barrett his first major league win.

It was a Rowdy Gentlemanly thing for Barrett to do, to borrow the name of what appears to be one of his favorite lifestyle brands. Barrett outfitted his teammates with T-shirts from the RG collection in Viera.

With more appearances like today’s, Barrett should get his own shirt. And perhaps his name spelled correctly on the Mets lineup card.