CINCINNATI -- Laynce Nix was in the Reds' original lineup in right field on Monday for the first game of a doubleheader against the Pirates, but he was scratched with a sore neck.
Nix missed three games last week and had an MRI on Friday that revealed a bulging disc in his neck. He was able to pinch-hit during the Reds' 3-2 loss in 12 innings to the Dodgers on Sunday.
"With a short night, he woke up stiff," Cincinnati manager Dusty Baker said. "He said he's been dealing with it, on and off, most of the year. He's a tough man. Sometimes tough doesn't last."
Nix is batting .251 with 13 home runs and 37 RBIs in 106 games this season.
Meanwhile, catcher Ryan Hanigan is responding well and believed he was beyond symptoms from a concussion that put him on the disabled list on Tuesday.
Hanigan took a concussion impact test a couple of days ago and was cleared to resume activity.
"I'm doing everything and feel good," Hanigan said Monday morning. "I hit, threw, lifted, worked out, ran and got my heart rate up. I'm thinking about a rehab assignment, but I'm not sure yet. After day three, I felt fine. I took another day to rest and started doing stuff. I haven't had any setbacks."
Hanigan hopes to be ready to play when he's eligible to come off the DL on Sept. 9.
Mark Sheldon is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.