Lets be honest, before cross country started none of us had ever heard of Paul Chelimo. But he finished 13th at cross nationals, 4th indoor in the 3k and now a strong 2nd in the outdoor 5k (besting some very good runners in the process). There hasn't been much hype about him and almost nobody even talked about him leading into the 5k yesterday (except Letsrun who now looks good picking him out of the crowd).
He said in his Flotrack interview that last year he was running mostly 14:00 with a 13:50 PR. He's dropped 30 seconds in his 5k in one year. That's quite an impressive improvement. He also said he has two years of eligibility left. Obviously he won't drop another 30 seconds next year but I think if he continues to improve he will be the man to beat next year.