Dodgers outfielder Joc Pederson broke it open with the first grand slam of the Major League season, and it triggered a 14-3 Dodgers pounding over the Padres on Monday. Yasmani Grandal slugged homers from both sides of the plate and Corey Seager crushed a three-run, opposite field blast.ou blinked, you missed it. The four homers were the most in franchise history on an Opening Day.