With Week 3 officially in the books, the Professional Referees Organization wasted no time in releasing the assignments for this weekend's eight MLS matches.

Here are the referee assignments for Week 4:

SATURDAY



D.C. United vs. Columbus Crew

RFK Stadium (3:30 pm ET)

REFEREE: ALLEN CHAPMAN

ASST 1: Peter Manikowski

ASST 2: Craig Lowry

4TH: Daniel Fitzgerald

New England Revolution vs. Sporting Kansas City

Gillette Stadium (4 pm ET)

REFEREE: EDVIN JURISEVIC

ASST 1: Claudio Badea

ASST 2: Jason Cullum

4TH: Mark Geiger

Montreal Impact vs. New York Red Bulls

Olympic Stadium (4:30 pm ET)

REFEREE: CHRIS PENSO

ASST 1: Joe Fletcher

ASST 2: Matthew Kreitzer

4TH: Silviu Petrescu

Houston Dynamo vs. Vancouver Whitecaps

BBVA Compass Stadium (8:30 pm ET)

REFEREE: MATTHEW FOERSTER

ASST 1: Paul Scott

ASST 2: Corey Parker

4TH: Hilario Grajeda

San Jose Earthquakes vs. Seattle Sounders FC

Buck Shaw Stadium (10:30 pm ET)

REFEREE: BALDOMERO TOLEDO

ASST 1: Frank Anderson

ASST 2: Adam Garner

4TH: Daniel Radford

FC Dallas vs. Real Salt Lake

FC Dallas Sports Park (8:30 pm ET)

REFEREE: JUAN GUZMAN

ASST 1: Ian Anderson

ASST 2: Matthew Nelson

4TH: Ted Unkel

LA Galaxy vs. Colorado Rapids

Home Depot Center (10:30 pm ET)

REFEREE: ARMANDO VILLARREAL

ASST 1: Corey E Rockwell

ASST 2: Jeremy Hanson

4TH: Kevin Stott

SUNDAY

Chicago Fire vs. Chivas USA

Toyota Park (5 pm ET)

REFEREE: SORIN STOICA

ASST 1: Anthony R Vasoli

ASST 2: James Conlee

4TH: Jorge Gonzalez