South Bend Cubs
The South Bend Cubs is a Class A minor league baseball team affiliated with the Chicago Cubs. On August 12, 2018, the team hosted "Mister Rogers Day" -- a promotional game-day event honoring the 50th anniversary of Mister Rogers' Neighborhood. Daniel Tiger was on hand as the Cubs wore special jerseys designed to replicate Mister Rogers' familiar cardigan sweaters.
[Image courtesy of South Bend Cubs via Twitter]

Notes
Similar jerseys were worn by the Altoona Curve in 2015.
Game-worn jerseys, signed by the players/coaches who wore them, were auctioned in support of PBS affiliate WNIT.