Diamondbacks' Humberto Castellanos: Slower than expected rehab

Castellanos still feels tenderness in his elbow after numerous attempts to start a throwing program.

The Diamondbacks placed Castellanos on the injured list with a right-elbow strain June 1, then two weeks later the right-hander was transferred to the 60-day injured list. Arizona manager Torey Lovullo said they've pulled back on pushing Castellanos, who is progressing slower than expected.