MILWAUKEE >> Zack Greinke's spring training began with an injection in his right elbow. Questions about his stamina followed him throughout camp. One month into the regular season, Greinke is the Dodgers' leader in innings pitched, earned-run average and wins (5-0). Absent the Clayton Kershaw of 2014 ‑ he's been merely good so far, not historically dominant ‑ Greinke is for all intents and purposes the Dodgers' staff ace at the moment.