GLENDALE, Ariz. -- I playfully asked Los Angeles Dodgers manager Don Mattingly whether the acquisition of Cuban infielder Hector Olivera will give him a glut of infielders this season reminiscent of the outfield glut everyone called "dysfunctional" in 2014. Mattingly, smiling, went right to diversionary tactics."Chad Gaudin," Mattingly said, "is throwing on the back fields tomorrow."Nice try.The Dodgers certainly need Olivera, with three infielders possibly departing via free agency in November, but do they need him now?