Fastest time in the world this year. What is amazing about this run are his splits. Som hits 400m at 50.9, but it's a decent gap to Rudisha. I timed Som 3 times and averaged 50.65; Rudisha and averaged 51.65 ... so add the .25 and he was 51.9 at the bell.
1:17.84 at 600m, which gives a last 200 of 25.51.
It looks like Rudisha negative split then, 51.9/51.45 !
Editor's Note: We edited this post to embed the race video.