The assignments for the Knockout Round of the 2017 MLS Playoffs are:

10/25/2017

Chicago Fire v New York Red Bulls

Toyota Park (8:30PM ET)

REF: ISMAIL ELFATH

AR1: Corey Parker

AR2: Ian Anderson

4TH: Silviu Petrescu

VAR: Edvin Jurisevic

Vancouver Whitecaps v San Jose Earthquakes

BC Place Stadium (10:30PM ET)

REF: JOSE CARLOS RIVERO

AR1: Adam Wienckowski

AR2: CJ Morgante

4TH: Baldomero Toledo

VAR: Dave Gantar

10/26/2017

Atlanta United v Columbus Crew

Mercedes-Benz Stadium (7:00PM ET)

REF: ALLEN CHAPMAN

AR1: Jeremy Hanson

AR2: Andrew Bigelow

4TH: Chris Penso

VAR: Fotis Bazakos

Houston Dynamo v Sporting Kansas City

BBVA Compass Stadium

REF: MARK GEIGER

AR1: Joe Fletcher

AR2: Mike Rottersman

4TH: Hilario Grajeda

VAR: Juan Guzman Jr