Dodgers Miguel Vargas might have learned value of not swinging

LOS ANGELES – Miguel Vargas has never been much of a walker. During his four seasons in the Dodgers’ minor-league system, he drew one walk for every 10 plate appearances. In his first taste of the big leagues last season, he walked just twice in 50 plate appearances. Then he had to stop swinging after suffering a hairline fracture in his right pinkie this spring. Like a bite from a radioactive spider, that injury seems to have given Vargas a new superpower – or at least a greater appreciation for plate discipline. “Yeah, for sure. It makes me be more…