anotherer riddle

Jim and his neighbor Creed are chatting, and at one point the subject of Creed's kids come up, but he doesn't want to give away their age, he tells Jim "I have three kids, the product of their ages is 72, and the sum is my address number".

But jim says that's not enogough for him to figure it out...so Creed goes "the eldest is a good tennis player", and Jim is able to figure it out.

How old are creed's sons?