SAN DIEGO (AP) — Rookie José Marmolejos hit his first grand slam and Shed Long Jr. also connected in the six-run first inning that carried the Seattle Mariners to an 8-3 victory against the San Diego Padres and a doubleheader split. The Mariners took two of three from the Padres, who got three home runs in the twin bill from red-hot Manny Machado. In the first game, Wil Myers hit a game-ending three-run homer to cap a seven-run rally with two outs in the seventh inning and give the Padres a 10-7 win. Machado had two homers among his three hits and drove in four runs.