He attended the University of Denver, where he set the NCAA Division I season record for face-off wins by a freshman.

[11] Baptiste also helped drive a playoff run that earned the team runner-up for the state championship.

[15] During his college search in 2014, Baptiste initially considered attending an NCAA Division III school.

He had planned to play for the Franklin & Marshall Diplomats in Lancaster, Pennsylvania, until the University of Denver called.

In March, Baptiste took a late-season recruiting visit to Denver, Colorado, and he signed an intent to play for the Pioneers in April.

[16] In October, Baptiste dominated face-offs in the Pioneers' exhibition game against the defending champion Denver Outlaws.

[17] Making his season debut, Baptiste dominated face-offs in Denver's season-opening victory over the defending champion Duke Blue Devils.

[17] During the 2015 season, Baptiste ranked sixth in ground balls per game in the Big East Conference.

[22] Baptiste was the only freshman named among the 25 nominees for the Tewaaraton Trophy for the top lacrosse player announced on April 23, 2015.

[25] Connor Cannizzaro and he were only the second and third Pioneers to achieve DI First Team All-America honors in school history.

His performance helped drive the Pioneers to the championship victory, the first in school history and the first west of the Appalachian Mountains.

[30] The NCAA named Baptiste and teammates Ryan LaPlante, Zach Miller, Mike Riis, and Wesley Berg to the All-Tournament Team.

[37] He would also represent the United States at the 2019 World Indoor Lacrosse Championship, winning a bronze medal.

Rabil said on Pardon My Take that he made sure that Baptiste ended up on the Atlas Lacrosse Club roster because he wanted the best FOGO in the league.

[41] Finishing in the top two in the fan vote, Baptiste was selected as a captain for the 2019 PLL All-Star Game.