Ramirez made his mark on a fledgling swimming and diving program and turned into one of the greatest swimmers in OBU history. He was a three-time NAIA Outstanding Swimmer of the Year as the Bison took home four NAIA National Championships in his four years on Bison Hill.

Ramirez is the NAIA record holder in the 100 back, 100 fly, 100 free, 200 medley relay, 200 free relay, and 400 free relay as he won 19 NAIA national Championships in his OBU career. In international competition he reached the 2016 FINA World Semifinals in the 50 fly.