Who's got the better mustache, Slater or Yastrzemski?, By KNBR
Austin Slater, Mike Yastrzemski sport mustaches
Who's got the better mustache, Slater or Yastrzemski?, By KNBR
Giants put mental health in spotlight during Mustache May
Giants Manager Gabe Kapler says he'll stay off the field during national anthem - The Washington Post
The San Francisco Giants' winners and losers of Mustache May - McCovey Chronicles
Giants put mental health in spotlight during Mustache May
San Francisco Giants Mustache May 2023 Rankings - McCovey Chronicles
Austin Slater, Mike Yastrzemski sport mustaches