High school girls basketball: MaxPreps All-American Tatianna Griffin transferring to Mater Dei

Rising junior guard leaving national champions to join storied program coming off 26-win season.

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Jun 9, 2026, 12:00pm
Regarded as the top-ranked high school girls basketball player in the Class of 2028, Tatianna Griffin announced via social media that she is transferring to Mater Dei (Santa Ana, Calif.) after playing her first two seasons at Ontario Christian (Calif.).

A 6-foot guard, Griffin averaged 21.3 points and 7.9 rebounds per game in 2025-26, helping Ontario Christian (34-2) capture state and national titles on the way to third team MaxPreps All-America honors. 

Helping Ontario Christian hold down the national No. 1 through much of the season, Griffin scored 25 or more points in 11 games and recorded 10 double-doubles while shooting 53 percent from the field and 39 percent from behind the arc.
Tatianna Griffin record three double-doubles during Ontario Christian's postseason run that culminated with California's Open Division state title. (PHOTO: David Steutel)
Tatianna Griffin record three double-doubles during Ontario Christian's postseason run that culminated with California's Open Division state title. (PHOTO: David Steutel)
Named the MaxPreps National Sophomore of the Year last season and MaxPreps National Freshman of the Year in 2024-25, Griffin will head to Czechia in July to represent the United States in the U17 World Cup.

Griffin will bolster a Mater Dei squad that finished 26-8 last season. 

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