Rookie dress-up day is an annual September tradition in baseball, with the young players donning silly garb for the amusement of the veterans. The league stepped in with some new rules this year to ensure the hazing event stays on the fun side rather than the realm bullying and excessive offense, and the Oakland A’s answered the call with a superb round of costumes.
With such a fresh new roster by the end of 2017, this class brought not only quality but also quantity. First up, the group photo.
That’s a lot of rookies! But actually, the spirit seems to have been expanded to young players in general, as several of these guys debuted in 2016 — including Sean Manaea as early as April.