The assignments for the second legs of the 2018 MLS Playoffs Conference Semifinals are:

11/08/2018

Western Conference Semifinal Second Leg

Seattle Sounders v Portland Timbers

CenturyLink Field (10:30PM ET)

REF: Jair Marrufo

AR1: Ian Anderson

AR2: Eduardo Mariscal

4TH: Robert Sibiga

VAR: Christopher Penso

AVAR: Michael Kampmeinert

11/11/2018

Western Conference Semifinal Second Leg

Sporting Kansas City v Real Salt Lake

Children’s Mercy Park (3PM ET)

REF: Jose Carlos Rivero

AR1: Adam Wienckowski

AR2: Andrew Bigelow

4TH: Christopher Penso

VAR: Kevin Stott

AVAR: Adam Wienckowski

Eastern Conference Semifinals Second Leg

Atlanta United v New York City

Mercedes-Benz Stadium (5:30PM ET)

REF: Mark Geiger

AR1: Matthew Nelson

AR2: Corey Rockwell

4TH: Armando Villarreal

VAR: Dave Gantar

AVAR: Kyle Longville

New York Red Bulls v Columbus Crew

Red Bull Arena (7:30PM ET)

REF: Alan Kelly

AR1: Jason White

AR2: Eric Weisbrod

4TH: Baldomero Toledo

VAR: Allen Chapman

AVAR: Logan Brown