Fernando Tatis Jr. hit a tiebreaking grand slam in the seventh inning and Manny Machado followed with a home run as San Diego’s high-priced superstars powered the Padres past the New York Mets 7-3 on Sunday to stop a four-game slide.Fernando Tatis Jr. hit a tiebreaking grand slam in the seventh inning and Manny Machado followed with a home run as San Diego’s high-priced superstars powered the Padres past the New York Mets 7-3 on Sunday to stop a four-game slide.