Added to Roster
Brett has been added to the Riverside 2025-26 basketball roster.Brett has been added to the Riverside 2025-26 basketball roster.Apps
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Brett Grinnan
- Brett has been added to the Riverside 2025-26 basketball roster.
Added to Roster
Brett has been added to the Riverside 2025 baseball roster.Added to Roster
Brett has been added to the Riverside 2024-25 basketball roster.Added to Roster
Brett has been added to the Riverside 2024 baseball roster.
Brett Grinnan's Bio
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Recent Basketball Games
Riverside High School 
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