i haven't watched him play for his team, but he threw between 90-93 during the world baseball classic. His slider does have a big drop. His curveball wasn't spectacular though (although i hear he wasn't his best in the WBC)
Anyway, his speed record in a game was 95, however in throwing with/for scouts (w/ no mound) he has consistently thrown 97-98 inaccurately. So you could put his fastball at like 97 and low control or like 91 w/ higher control.