What is the fine-grained topic of the following text: After beating San Rafael and Marin Academy by a combined score of 29-12, Tam cruised past Pinole Valley (20-1), Irvington (13-9), Piedmont (12-2) and Bishop O’Dowd (12-5) to capture the Pinole Valley Tournament championship over the weekend. Only return the topic.
Tam's victory in the Pinole Valley Tournament championship