BOSTON — J.D. Martinez took plenty of ribbing in the dugout after slicing a short home run inside the Pesky Pole at Fenway Park. A few innings later, he showed his teammates some serious power. Martinez hit two vastly different drives for his first multihomer game with Boston, powering Eduardo Rodriguez and the Red Sox to a rare 13-hit shutout in a 5-0 victory over the Baltimore Orioles on Sunday. It was the most hits Boston has allowed in a shutout since at least 1908, the team said. Signed to a $110 million, five-year deal as a free agent in February, the 30-year-old Martinez curled his first home run an estimated 324 feet around the right-field foul pole.