The Los Angeles Dodgers own a robust 7 1/2-game advantage in the National League West, which means the next few months could be about probing baseball’s deepest roster for potential problem spots. Such flaws are difficult to find. Even after an ugly 13-5 loss Sunday against the Angels, they have a comfortable division lead while possessing the best offense (.784 OPS) and pitching staff (3.17 ERA) in baseball. Their plus-133 run differential leads the majors.