As for Upton, the oblique is the same injury that caused him to be scratched from a start during a series in Pittsburgh on the team's last road trip before the All-Star break.
He said it started to really tighten up on him Sunday.
"It got to the point where I couldn't rotate," Upton said. "It feels like something has locked up. Instead of pushing it, we felt coming out of the game would be the best thing."
The injury was initially called lower back tightness, with the imminent inclement weather as a reason to get Upton out of the game, said interim manager Pat Murphy.
"I think he's played through it a little bit," Murphy said. "He's realizing that this is getting worse and this could jeopardize the season if he didn't take care of it. It really tightened up on him today."
Upton was 0-for-2 at the plate, lining into a double play in his final at-bat in the bottom of the fourth inning.