The Marlins have optioned Cishek to Double-A Jacksonville, MLB.com's Joe Frisaro reports. It's a bit surprising to see the demotion happen like this, but Cishek has had an awful season and has been giving up hits in bunches lately -- 16 of the in his last nine innings. He'll get a chance to work things out in the minors; it stands to reason that if he does so, Cishek will be back with Miami in the second half. No corresponding move has been announced yet.