The assignments for the Conference semifinals of the 2019 MLS Cup Playoffs:

10/23/19

New York City FC vs Toronto FC

Citi Field (7PM ET)

REF: Jair Marrufo

AR1: Logan Brown

AR2: Jose Da Silva

4TH: Robert Sibiga

VAR: Geoff Gamble

AVAR: Peter Manikowski

Seattle Sounders vs Real Salt Lake

CenturyLink Field (10PM ET)

REF: Alan Kelly

AR1: Nick Uranga

AR2: Kathryn Nesbitt

4TH: Rubiel Vazquez

VAR: Jon Freemon

AVAR: Jonathan Johnson

10/24/19

Atlanta United vs Philadelphia Union

Mercedes-Benz Stadium (8PM ET)

REF: Ismail Elfath

AR1: Corey Parker

AR2: Kyle Atkins

4TH: Baldomero Toledo

VAR: Edvin Jurisevic

AVAR: Thomas Supple

Los Angeles FC vs LA Galaxy

Banc of California Stadium (10:30PM ET)

REF: Kevin Stott

AR1: Brian Poeschel

AR2: Andrew Bigelow

4TH: Christopher Penso

VAR: Dave Gantar

AVAR: Joshua Patlak