CONCACAF Champions League – Round of 16 (First Leg)

20-22 February 2018

Herediano – Tigres
Referee: Ismail Elfath (USA, photo)

Assistant Referee 1: Corey Rockwell (USA)
Assistant Referee 2: Ian Anderson (USA)
Fourth Official: Theodore Unkel (USA)

Colorado Rapids – Toronto FC

Referee: Kimbell Ward (SKN)
Assistant Referee 1: Graeme Browne (SKN)
Assistant Referee 2: Jean Moreau (HAI)
Fourth Official: Daneon Parchment (JAM)

Tauro – FC Dallas
Referee: Cesar Ramos (MEX)
Assistant Referee 1: Marvin Torrentera (MEX)
Assistant Referee 2: Miguel Hernandez (MEX)
Fourth Official: Oscar Macias (MEX)

Saprissa – Club America
Referee: Mark Geiger (USA)
Assistant Referee 1: Joseph Fletcher (CAN)
Assistant Referee 2: Frank Anderson (USA)
Fourth Official: Armando Villarreal (USA)

Motagua – Tijuana
Referee: Henry Bejarano (CRC)
Assistant Referee 1: Osvaldo Luna (CRC)
Assistant Referee 2: Kevin Stephens (GUY) 

Fourth Official: Juan Calderon (CRC)

Cibao FC – Guadalajara

Referee: Yadel Martinez (CUB)
Assistant Referee 1: Hiran Dopico (CUB)
Assistant Referee 2: Geovany Garcia (SLV)
Fourth Official: Marcos Brea (CUB)

Santa Tecla – Sounders FC
Referee: Melvin Matamoros (HON)
Assistant Referee 1: Melvyn Cruz (HON)
Assistant Referee 2: Angel Castillo (DOM)
Fourth Official: Hector Martinez (HON)

Olimpia – New York Red Bulls
Referee: John Pitti (PAN)
Assistant Referee 1: Gabriel Victoria (PAN)
Assistant Referee 2: Ronald Bruna (PAN)
Fourth Official: Ariel Sanchez (PAN)