In this week's edition of the Week That Was, I seemingly make the case for all of them. It's a great problem for US distance fans to have.
PS. While you discuss this, plears remember you remember you are talking about real people who are teenagers and very well may read what you write. So try to be courteous.
Update. PPS. I forgot to mention Hobbs Kessler in the title as I didn't bring him up in the article (although maybe I should as he ran a half second indoor pb at the NBIGP which I thought was encouraging). While already a pro, he's just 18 (15 March 03) and only 7 months older than C Sahlman.
PPS. Nico Young is also still a teen so let's throw him in there as well.