Jack Gilford received his only Oscar nomination for portraying Phil Greene in Save the Tiger.
Gilford there acts as basically the sidekick to Harry extreme measures he takes to deal with their problems. Gilford is just fine in showing how they both have been partners for a longtime, and been in the same business for too long. He has the same sort of exhaustion as well as frustration as harry, although Gilford always shows that Phil is able to deal with it with far more easily than Harry.
Phil mostly just follows along Harry with every one of his plans the only thing he does is offer a less pessimistic view as well as act as the more conscience of the two. Gilford is good in realistically showing Phil's disbelief in the lengths Harry goes, but only showing enough disbelief to voice slight objections but never completely object to the idea either. After this though Gilford is not really given much to do, he is consistently fine but every scene he is in always belongs to Jack Lemmon not to him.