STOCKTON, Calif. (Interstat) — The San Jose Giants opened their season with a 12-8 victory over the Stockton Ports on Thursday at Banner Island Ballpark. San Jose built a 5-0 lead before Stockton rallied for six runs across the fifth, sixth and seventh innings. The Giants pulled away with a four-run eighth, highlighted by Hayden Jatczak’s three-run homer. Jatczak went 3 for 4 with a home run and four RBIs. Teammate Junior Barajas added a two-run homer. Ricardo Estrada earned the win in relief. Nathan Dettmer took the loss for Stockton. Breyson Guedez drove in three runs for the Ports. Attendance was 2,052. The teams continue their series Friday.