The Marlins have informed clubs that closer Steve Cishek is not available. Whether that changes before next Thursday's non-waiver Trade Deadline remains to be seen.
Relief pitchers are in high demand. One veteran just became available. The A's designated former closer Jim Johnson, who labored with a 6.92 ERA.
In early June, the Marlins reportedly had interest in Johnson. But Miami ended up acquiring Bryan Morris from the Pirates for a Competitive Balance pick in the First-Year Player Draft.
Lefty Mike Dunn is another reliever who has drawn interest in trade talks.
At the 100-game mark, the Marlins are 47-53 and in fourth place in the National League East.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter