Professional Referee Organization's referee assignments for MLS Week 4 matches

MLS referees

SATURDAY, MARCH 29

Philadelphia Union vs. Montreal Impact
PPL Park (4 pm ET)
REFEREE: EDVIN JURISEVIC
AR1: Frank Anderson
AR2: Mark Cahen
4TH: Daniel Fitzgerald


D.C. United vs. Chicago Fire
RFK Stadium (4 pm ET)
REFEREE: JAIR MARRUFO
AR1: Eric Boria
AR2: Adam Garner
4TH: Chris Penso


Colorado Rapids vs. Sporting Kansas City
Dick’s Sporting Goods Park (6 pm ET)
REFEREE: JOSE CARLOS RIVERO
AR1: Gregory Barkey
AR2: Brian Dunn
4TH: Jorge Gonzalez


Vancouver Whitecaps vs. Houston Dynamo
BC Place (7 pm ET)
REFEREE: KEVIN STOTT
AR1: Adam Wienckowski
AR2: Felisha Mariscal
4TH: Younes Marrakchi


FC Dallas vs. Portland Timbers
Toyota Stadium (8:30 pm ET)
REFEREE: SORIN STOICA
AR1: Kermit Quisenberry
AR2: George Gansner
4TH: Ismail Elfath


Real Salt Lake vs. Toronto FC
Rio Tinto Stadium (9:30 pm ET)
REFEREE: BALDOMERO TOLEDO
AR1: Mike Rottersman
AR2: Fabio Tovar
4TH: Drew Fischer


Seattle Sounders vs. Columbus Crew
CenturyLink Field (10 pm ET)
REFEREE: ALLEN CHAMPMAN
AR1: Jeff Muschik
AR2: Jeremy Hanson
4TH: Alejandro Mariscal


San Jose Earthquakes vs. New England Revolution 
Buck Shaw Stadium (10:30 pm ET)
REFEREE: DAVE GANTAR
AR1: Baboucarr Jallow
AR2: Marco Arruda
4TH: Iannis Stavridis


SUNDAY, MARCH 30

New York Red Bulls vs. Chivas USA
Red Bull Arena (3 pm ET)
REFEREE: JUAN GUZMAN
AR1: Sean Hurd
AR2: Scott Kachimarik
4TH: Robert Sibiga