First-base umpire Dan Bellino originally called Reynolds safe as it appeared Lucas Duda's foot came off the bag. The safe call allowed Khris Davis to score from third on the play.
But after Collins' challenge, the call was overturned as replay showed that Duda had touched the bag before Reynolds did.
The overturned call took Davis' run off the board and ended the eighth inning.
Caitlin Swieca is an associate reporter for MLB.com. Follow her on Twitter at @CaitlinSwieca. This story was not subject to the approval of Major League Baseball or its clubs.