The Professional Referee Organization has announced the referee assignments for the opening weekend of Major League Soccer's 2015 season:

FRIDAY, MARCH 6

LA Galaxy v Chicago Fire
StubHub Center (10 pm EST, UniMas)
REF: JAIR MARRUFO   
AR1: Frank Anderson
AR2: Corey Rockwell
4TH: Alejandro Mariscal

SATURDAY, MARCH 7

D.C. United v Montreal Impact
RFK Stadium (3 pm EST, MLS Live)
REF: MARK GEIGER
AR1: Greg Barkey
AR2: Matthew Nelson
4TH: Mark Kadlecik

Philadelphia Union v Colorado Rapids
PPL Park (4 pm EST, MLS Live)
REF: SILVIU PETRESCU
AR1: Daniel Belleau
AR2: Gianni Facchini
4TH: Jose Carlos Rivero

Vancouver Whitecaps v Toronto FC
BC Place (6 pm EST, TSN, RDS2, MLS Live)
REF: KEVIN STOTT
AR1: Mike Rottersman
AR2: Marco Arruda
4TH: Baboucarr Jallow

FC Dallas v San Jose Earthquakes
Toyota Stadium (8:30 pm EST, MLS Live)
REF: TED UNKEL
AR1: Claudiu Badea
AR2: Jonathan Johnson
4TH: Alex Chilowicz

Houston Dynamo v Columbus Crew
BBVA Compass Stadium (8:30 pm EST, MLS Live)
REF: ALLEN CHAPMAN
AR1: Jeff Muschik
AR2: Jeremy Hanson
4TH: Younes Marrakchi

Portland Timbers v Real Salt Lake
Providence Park (10:30 pm EST, MLS Live)
REF: ISMAIL ELFATH
AR1: Ian Anderson
AR2: Jeff Hosking
4TH: Juan Guzman

SUNDAY, MARCH 8

Orlando City v New York City
Citrus Bowl (5 pm EDT, ESPN2, ESPN Deportes)
REF: ALAN KELLY
AR1: Adam Wienckowski
AR2: Brian Dunn
4TH: Hilario Grajeda

Sporting Kansas City v New York Red Bulls
Sporting Park (7:30 pm EDT, Fox Sports 1, Fox Deportes)
REF: BALDOMERO TOLEDO
AR1: Fabio Tovar
AR2: Chris Strickland
4TH: Sorin Stoica

Seattle Sounders v New England Revolution
CenturyLink Field (9:30 pm EDT, Fox Sports 1, Fox Deportes)
REF: ARMANDO VILLARREAL
AR1: Peter Manikowski
AR2: Corey Parker
4TH: Baboucarr Jallow