Melancon has previously filled in for Jason Grilli over the past two seasons. He will again be doing so this year as Grilli gets a temporary break.
In 35 games this season Grilli has a 1.89 ERA and a 0.78 WHIP and already has 10 saves.
Grilli temporarily out as #pirates closer. Melancon takes over.
— Tom Singer (@Tom_Singer) June 20, 2014
Grilli has simply not been the pitcher that was selected to the All-Star Game a season ago. A recent bad patch has Grilli sporting a 4.34 ERA and a 1.45 WHIP in 20 games.
The decision is not considered permanent according to Pirates manager Clint Hurdle.