Mater Dei head coach Chris Segesman talks to his team during a timeout during the Monarchs’ 11-6 victory over Orange Lutheran in a Trinity League boys water polo game at Mater Dei High in Santa Ana, CA on Wednesday, October 18, 2017.

Source: https://www.ocregister.com/2023/03/10/mater-dei-hires-chris-segesman-as-girls-water-polo-coach/

Sierra Canyon (11-0) will next play Trinity League runner-up Mater Dei in the Division 1 semifinals on Friday, Nov. 17. It will be a Mater Dei home game.

Source: https://www.dailynews.com/2023/11/10/sierra-canyon-football-beats-santa-margarita-for-first-division-1-playoff-win/

The start of their five-game Trinity League gauntlet on Friday night against Servite presented a fresh look at where the Monarchs stand.

Source: https://www.latimes.com/sports/highschool/story/2023-09-29/servite-mater-dei-football-game-trinity-league-recap