Bronson Arroyo‘s durability was his primary selling point as a 37-year-old free agent, but his stint with the Diamondbacks has started with an injury.

Steve Gilbert of MLB.com reports that Arroyo has a bulging disk in his back and is expected to be out for 7-10 days. He was scratched from Tuesday’s scheduled start and sent for an MRI exam, followed by an epidural.