Putnam (elbow) is expected to have surgery to remove bone spurs, Scot Gregor of the Daily Herald reports.
It was originally thought that Putnam would avoid surgery and begin a rehab assignment, but now it appears he will go under the knife to remove the bone spurs and make sure he is fully healthy before returning. The 28-year-old was having a fantastic season before the injury, posting a 2.30 ERA and 9.88 K/9 in 25 relief appearances.