x SAN FRANCISCO (AP) — Frank Gore purchased a gray hooded sweatshirt months ago specifically for this day, featuring an upside down teal dolphin in distress. Miami’s mascot, on its head — with a first-aid symbol and an “X’’ over each eye to boot.“I said, ‘We’ve got to turn him upside down,’” he said.A Miami man through and through, Gore sure did his part.Gore ran for a 1-yard touchdown and reached 1,000 yards rushing for the sixth time in his career, and even took the fake on Colin Kaepernick’s late 50-yard scoring run in the San Francisco 49ers’ 27-13 victory against the Dolphins on Sunday.Gore, Kaepernick and Michael Crabtree pulled off just the kind of grind-it-out win coach Jim Harbaugh wants to see during the December stretch run.Gore finished with 63 yards rushing, caught two passes and also matched his mentor, Roger Craig, and late Hall of Famer Joe Perry for the franchise record in rushing touchdowns with 50. And, no, Gore didn’t grow up a Dolphins fan in his native South Florida.“It’s a blessing.