Pedzisa mutsara unotevera: Muna 2011, basa raGrilli rakatanga somutambi anobatsira nePittsburgh Pirates. Gore iroro, akatakura 2.48 yakawanikwa run avhareji (ERA) uye 10.2 strikeouts pa mapfumbamwe innings (K/9) mwero mu32 innings pitched (IP), uye akavandudzazve muna 2012, apo wake strikeout mwero akakwira kusvika 13.8. Muna 2013, Grilli akaita rake rokutanga
Chikwata cheAll-Star uye akava muchengeti wePittsburgh pazera remakore 36. Kubva 2011 kusvika 2014, akaunganidza 3.09 ERA ine 11.9 K / 9, 3.3 BB / 9 uye 34.2 muzana pasi-bhora mwero muIP.