The D-backs played sloppy defense all night. But instead of five errors, they officially have four now.
The play in question came in the seventh inning. With the score tied at 1 and Marcell Ozuna on third base, Arizona moved its infield in. Mathis tapped to short, and Pennington threw wide to catcher Miguel Montero. Initially, it was scored a fielder's choice and an error to the shortstop.
Jernick gave the play a closer look, and he felt Pennington's angle to the plate was partially obstructed by where pitcher Wade Miley was standing.
So rather than give the shortstop a tough error, the revised ruling was a fielder's choice RBI to Mathis.
Instead of allowing two runs, with one unearned, for Miley, both runs in his outing are now earned.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter @JoeFrisaro This story was not subject to the approval of Major League Baseball or its clubs.