Shohei Ohtani wasn’t smiling. Ohtani pitched his best game of the season on Wednesday night, but in the aftermath of the Dodgers’ 4-0 victory over the Giants, he looked as if his dog just died. Manager Dave Roberts kept him out of the Dodgers’ offensive lineup for the fourth time in five starts, and the one-way version of Ohtani responded with seven scoreless innings that ended the team’s four-game losing streak. Shohei Ohtani was dominant on the mound in the Dodgers 4-0 victory over the Giants Wednesday night. Getty Images That was viewed as a coincidence by Ohtani, who kept denying that his pitching was affecting his hitting , and vice versa. Ohtani wasn’t about to concede that his workload required modifications, even though his home run the previous night was only his second in his last 24 games as a hitter. “I think it’s simply a lack of ability,” he said in Japanese.…