The following are the referee assignments for Group Stage - Week 4 of the CONCACAF Champions League 2014-15:

Game:   Waterhouse Football Club (JAM) vs DC United (USA)
Date:     September 16, 8:00 pm EST
Venue:  National Stadium, Kingston, Jamaica
Officials:  

Referee

Adrian Skeete

BRB

Assistant Referee 1:

Osvaldo Luna

CRC

Assistant Referee 2:

Venton Mars

GUY

4th Official

Enrico Wijngaarde

SUR

Assessor

Mirna Guerra

SLV

Match Commissioner:

Lyndon Cooper

LCA

Game:  Cruz Azul FC (MEX) vs Chorrillo FC (PAN)
Date:    September 16, 8:00 pm EST
Venue:  Estadio Azul, Mexico City, Mexico
Officials:  

Referee

Marlon Mejia SLV

Assistant Referee 1:

Douglas Bermudez SLV

Assistant Referee 2:

Geovany Garcia SLV

4th Official

Joel Aguilar SLV

Assessor

Donald Campos NCA

Match Commissioner:

Hillaren Frederick VIR

Game:   Portland Timbers (USA) vs Club Deportivo Olimpia (HON)
Date:     September 16, 10:00 pm EST
Venue:  Providence Park, Portland, Oregon, USA
Officials:  

Referee

John Pitti

PAN

Assistant Referee 1:

Gabriel Victoria

PAN

Assistant Referee 2:

Juan Baines

PAN

4th Official

Ameth Sanchez

PAN

Assessor

Ronald Guitierez

CRC

Match Commissioner:

Enrique Ramirez

MEX

*Home team listed first
# Referee assignments are subject to change