White Sox release former All-Star closer

The White Sox released right-hander

 earlier this week, as reported by Sox Machine’s James Fegan and other members of the team’s beat.  MLB.com’s profile page for Knebel lists the transaction as an “elected free agency,” which implies that Knebel exercised an opt-out clause in the minor league contract he signed last winter.

Knebel suffered a capsule tear in his right shoulder almost two years ago. After…