Kiprop went from first to last in the span of 50 meters halfway through the race but it didn't matter as he was back with the leaders with 300 to go and blew everyone away on the homestretch to get the win. Matthew Centrowitz ran well to finish second in 3:55.03, .03 ahead of Ayanleh Souleiman.

Don't hand the gold medal to Justin Gatlin just yet. Usain Bolt put together his best showing of 2015 by far, running 9.87 into a headwind twice within the span of an hour to win at the Sainsbury's Anniversary Games.
*MB: Usain Bolt "Is Almost Back" - 9.87 Win Into Wind in London

The men's 800 (Rudisha vs. Amos Rematch + Berian and Loxsom) and mile (Kiprop vs. Souleiman as Centro, Leo and Blankenship try to go sub-3:50) are the crown jewels of the Saturday action. Other action includes Molly Huddle vs. Mercy Cherono in the 5,000, Eunice Sum vs. Brenda Martinez in the 800 and an African showdown between Isaac Makwala (#5 all-time) and Wayde van Niekerk (#11 all-time) in the 400.

Farah has proven himself as the favorite for 5k/10k gold in Beijing but Bolt still has work to do to catch Justin Gatlin. Can he get closer in London? Farah faces Lopez Lomong & Bernard Lagat in the 3k, plus an American-heavy women's 1,500 featuring Lauren Johnson, Katie Mackey, Treniere Moser and many more.