rojas attended millenium high school in goodyear, arizona and played college baseball at paradise valley community college and the university of hawaii. in 2015, he played collegiate summer baseball with the cotuit kettleers of the cape cod baseball league. in 2017, his senior year at hawaii, he hit .294 with five home runs and 25 rbis in fifty games. after the season, he was drafted by the houston astros in the 26th round of the 2017 major league baseball draft.