Brett Gardner began growing a mustache in the middle of April while the Yankees, who haven't lost a series since, were on their way to sweeping the Rays at Tampa Bay. The trend has caught on with other members of the Pinstripes amid their hot streak.
Despite being on the disabled list, Masahiro Tanaka is participating in the mustache trend, too.
Jacoby Ellsbury on his mustache: "I'm just trying to stay warm."
Mark Teixeira, who leads the Yankees in home runs, said his 'stache is coming in slowly but surely.
This isn't Chase Headley's first go-round with facial hair. He sported a full beard at times during his tenure with the Padres.
"It takes me a while to get it going, but ever since Tampa, we've just been playing good," Gardner said before a game against the Mets, played on Brett Gardner Bat Day. "I kind of stuck with it and some other guys followed suit. It's something we talked about, just having fun with it."
Andrew Miller pitches in the ninth inning against the Baltimore Orioles at Yankee Stadium on Thursday, May 7, 2015.
Brian McCann is also no stranger to facial hair. He rocked a beard during his time with the Braves.
Dellin Betances, 27, on trying to get some hair on his upper lip: "I have no facial hair; I'm still a baby. I've never tried to grow a mustache. Mine is the worst one."
Nathan Eovaldi of the New York Yankees pitches in the first inning against the Baltimore Orioles at Yankee Stadium on Thursday, May 7, 2015.
Stephen Drew of the New York Yankees is seen with facial hair during a game against the Baltimore Orioles at Yankee Stadium on Thursday, May 7, 2015.
Brett Gardner said he has been most impressed with Esmil Rogers' growth so far.