Looking at Yorks graph in Milesplit (
wa.milesplit.com/athletes/1135690-izaic-yorks/stats), he has the most room out of all the others; he's still a baby in the 1600/Mile discipline. The two times he ran 4:04, he was out by himself and running negative splits both times (2:04-2:00 -
va.milesplit.com/videos/?id=26602 )while Cheserek and company have been pushed pretty hard and fallen short.