Martinez-Bertrand appeared in all 22 games for Western Michigan University as a redshirt freshman in 2017, recording two goals and a pair of assists. On Nov. 25, the 5-foot-10, 160-pound midfielder scored the opening marker in the Broncos’ 2-1 defeat at Michigan State University in the third round of the 2017 College Cup.
Prior to his collegiate career, Martinez-Bertrand played with Kokomo (Ind.) High School as a senior foreign exchange student in 2015. The Sant Antoni de Vilamajor, Spain, native tallied 17 goals and 14 assists to help the Wildkats win the North Central Conference (NCC) and the IHSAA Class 2A Kokomo Sectional championship. Martinez-Bertrand was subsequently honored as an All-NCC selection and garnered ISCA Third-Team All State accolades.