- May 8–11Cal State San Marcos Baseball vs CCAA TournamentCal State San Marcos Baseball vs CCAA Tournament Streaming Video: https://ccaanetwork.com/csusm/ Tickets: https://goccaa.org/sports/2021/9/3/GEN_0903210215.aspx https://www.csusmcougars.com/calendar.aspx?game_id=5822&sport_id=1
- May 16–18Cal State San Marcos Baseball vs NCAA West RegionalCal State San Marcos Baseball vs NCAA West Regional https://www.csusmcougars.com/calendar.aspx?game_id=5954&sport_id=1
- May 24All dayCal State San Marcos Baseball vs NCAA West Super RegionalCal State San Marcos Baseball vs NCAA West Super Regional https://www.csusmcougars.com/calendar.aspx?game_id=5955&sport_id=1
- Jun 1–7Cal State San Marcos Baseball vs NCAA ChampionshipCal State San Marcos Baseball vs NCAA Championship https://www.csusmcougars.com/calendar.aspx?game_id=5956&sport_id=1