The Pirates have designated Vin Mazzaro for assignment to clear space for Brandon Cumpton, who will start today. Jared Hughes was optionable, so I'm not sure why the Bucs are again risking losing Mazzaro.
But oh well. The Pirates got Mazzaro through the waivers process once; maybe they can do it again. No team wanted him a couple months ago, and his strikeout and walk numbers have always been mediocre. His velocity is also down a bit. But Mazzaro had a decent season last year, much of the rest of the 2014 bullpen has been a question mark, and Hughes could easily have just been sent down.