Walker (elbow) threw four innings in an extended spring-training game Monday, Dawn Klemish of MLB.com reports. The right-hander allowed three runs (two earned) on three hits, struck out four and didn't walk a batter.
This checks off another box on Walker's recovery-rehab list. Manager Torey Lovullo said the right-hander experienced normal fatigue following the session and was pleased with Walker's velocity and secondary stuff.