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Interesting that they list Steve Cishek even though he underwent serious surgery to repair a torn hip labrum in October that will require 4-6 months of recovery and is very unlikely to be ready for spring traing. However, there's no mention of Tony Zych who also had surgery around the same time but for a procedure (shoulder biceps tendon transfer) that should mean recovery by spring training as apparently it doesn't involve the rotator cuff or capsule in the shoulder.
Perhaps for Zych there's a quicker recovery time but fewer guarantees of success or return to previous performance levels, hence the omission?