Giants' Mike Yastrzemski Turns Heads With On-Field Change

Yahoo

20-05-2025

The San Francisco Giants (24-17) are currently off to their finest start since 2021, which was also the most recent campaign wherein this franchise won the National League West.
One can point to many aspects, but part of San Francisco's recent resurgence can be attributed to dynamic play from right fielder Mike Yastrzemski.
San Francisco Giants right fielder Mike Yastrzemski (middle) celebrates after scoring on a sacrifice fly at Target Field.Matt Krohn-Imagn Images
Yastrzemski — who is MLB Hall-of-Famer Carl Yastrzemski's grandson — is enjoying a nice season both at the plate and in the field. Entering Monday, his 2025 numbers reflect career-bests in on-base percentage (.374) and K-rate (19.7%). In 36 games, he's added four stolen bases and five OF assists.
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However, since the start of May, the Giants' clubhouse chatter has focused instead on Mikey Yaz's pronounced mustache. For the fifth consecutive year, Yastrzemski is participating in "Mustache May"—and it's for a good cause.
Per Maria Guardado of MLB.com, Yaz and a few of his San Francisco teammates are increasing the follicle activity above their upper lips.
Of the Giants joining in on the mustachioed fun this May are Hayden Birdsong, Matt Chapman, Jordan Hicks, Christian Koss, Lamonte Wade, Jr., Logan Webb and Justin Han (Jung Hoo Lee's interpreter). Yastrzemski even ranks each player's facial hair, showing the most respect to Hicks and Wade.
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Along with sporting a rugged mouthbrow, Yaz is promoting awareness around mental health by selling official "Mustache May" T-shirts. According to Guardado, "All proceeds from the Giants-themed T-shirts will benefit the Heart and Armor Foundation, which aims to protect the health of veterans and provide resources to those struggling with PTSD and other issues."
Related: San Francisco Giants' Heliot Ramos Turns Heads After Clash with Wrigley Field Heckler
The fundraiser has become an annual tradition in San Francisco, but the team's play in May 2025 has sputtered. This month, the Bay Area's lone MLB franchise has gone 5-5. Still, they've maintained a +12 run differential throughout that same span, typically indicating positive results to come.
The Giants are in action Monday night at Oracle Park with a divisional affair versus the Arizona Diamondbacks. Projected starters are Merrill Kelly and Justin Verlander; first pitch is slated for 9:45 p.m. ET.