The University of Arizona is mourning the death of one of its former football stars.

Sterling Lewis, who played as a linebacker for the Arizona Wildcats in 2008 and 2009 under coach Mike Stoops, died on Wednesday at the age of 32, the school confirmed to PEOPLE.

He is survived by his wife, Ashley, and their two young sons.

According to Jack Welch, Lewis’ coach at Copperas Cove High School in Texas, the athlete died while battling valley fever disease complications.

The fungal infection — caused by coccidioides organisms commonly found in soil in the Southwest — can cause symptoms that resemble those of the flu — like fever, chest pain, and coughing, the Mayo Clinic reports.