Liev Schreiber became known.
Isaac Liev Schreiber ( [ ˈliː.ɛv ] born October 4 , 1967 ) , better known as Liev Schreiber , is an American actor , director , screenwriter , and producer . Schreiber has had further success in the television world , notably portraying the eponymous protagonist of the Showtime drama series Ray Donovan ( 2013 -- present ) ; the role has earned him four Golden Globe Award nominations and two Primetime Emmy Award nominations .