Greinke’s Opening Day availability up in the air

The good news for Zack Greinke is that the groin tightness that took him out of Wednesday’s start after one inning appears minimal and is not raising significant health issues. The bad news for anyone who took Greinke in the Opening Day starter sweepstakes is that cutting short his scheduled five-inning Wednesday outing could well mean the D-backs ace is not on the hill when they start the season against the Rockies on March 27.