Ángel Hernández (umpire) - Wikipedia
Sources: Replay Could Vanish for '20 under MLB, Ump Deal
Close Call Sports & Umpire Ejection Fantasy League: 2020 MLB
Williamstown-native Conroy set to umpire ALCS in MLB's San Diego
1999-2023 MLB Umpire Rosters, Post Season and All Star Game Crews
World Series ump crew youngest in years, nod to K-zone tech
MLB Fans Furious With Home Plate Umpire In Phillies vs. Marlins
MLB, umpires reach deal for 2020; umpires accept pay cut in
Mark Carlson (umpire) - Wikipedia
10 Secrets of MLB Umpires
11 MLB umpires have opted out of 2020 season, per report
Dodgers-Padres NLDS umpires: Mark Carlson is crew chief - True Blue LA
Quinn Wolcott - Wikipedia
Press release: 2021 Wild Card Game, Division Series umpires announced