Iassogna will be World Series umpire crew chief

Dom Amore: From Andy Baylock's intro course in umpiring at UConn, Jim Reynolds, Dan Iassogna have risen to rank of MLB crew chief – Hartford Courant

Adrian Beltre's nemesis named crew chief for World Series umpires

Umpires for LCS Are Slightly Above Average in NL, Below Average in AL, News, Scores, Highlights, Stats, and Rumors

555 Dan Iassogna Umpire Photos & High Res Pictures - Getty Images

Old School Umps - BallNine

MLB Umpires Missed 34,294 Ball-Strike Calls in 2018. Bring on Robo-umps?, Bostonia

Marquette native Adam Hamari to umpire Major League Baseball wild card playoff series between Toronto, Minnesota

Chance Encounters of the Life-Changing Kind

ALCS umpires named for Lone Star Series between Rangers, Astros – NBC 5 Dallas-Fort Worth

Testimony - MLB official thought Rob Manfred would nix Angel Hernandez World Series assignment - ESPN