People are under estimating Rupp's speed. This year he has closed in 52-53 semi-consistently. He also ran 3:34 IN MAY. I predict 3:32 low. If it's a strong pace early, and someone is willing to take the pace and go for it the last 2k, I can see Galen running 12:48. Yes he's American and no American has run close to that fast, but he's been running like an African. 8:09, 3:34, 26:48, 2nd at the Olympics, closing in 52-53, and training with the fastest man in the world are all things specific to Rupp that will allow him to run times as fast as these.