I know hardly anybody cares about Track and Field but you should check out this video of Kiprop setting a new WR in the 1500, The race only takes 3:26.69 so you should check it out. Just look at the turnover of those guys running and you'll get a sense of how fast they're flying! Centrowitz PR's in this race and runs the 4th fastest American time ever and he still gets smoked! World Championships are next month, with the Olympics coming next year look for all the big names to be going after it at Worlds this year.