MLB umpiring promotions for 2023
A Large Number of Veteran MLB Umpires Are Retiring - Bleacher Nation
Southern Baptist minister doubles as umpire in this year's World
Longtime MLB umpire Joe West to retire after 2021 post-season
Baseball: A trip through time with former MLB umpire Bill Hohn
MLB will see 10 rookie umps replace veterans as position faces
Sources - 10 MLB umps retiring, most since '99 - TSN.ca
Play Ball! UConn Magazine
MLB Rumors: Ted Barrett & Greg Gibson Among 10 Umpires Retiring
The Umpire Is Out: Calling the Game and Living My True Self: Scott
MLB appoints 1st black umpire crew chief
Longtime MLB umpire, Minot native Gary Cederstrom to retire
Gibson makes final call: MLB umpire retires after 24-year career