Shohei Ohtani shrugged off concerns about his injured shoulder Monday as the Los Angeles Dodgers closed to within one win of sweeping Major League Baseball’s World Series with a 4-2 Game 3 victory over the New York Yankees. The Japanese superstar was “very adamant” about starting as the Dodgers’ leadoff hitter and designated hitter two days after suffering a left shoulder subluxation while attempting a stolen base in the seventh inning of Game 2, manager Dave Roberts said. “I think there was more uncertainty in all of our minds, but in his mind from Day 1, from Saturday evening, he was going t…