UTEP's Emmanuel Korir today ran the no. 2 all-time NCAA 800 in 1:43.73 at the Brutus Hamilton Challenge in Berkeley, California. Korir negative split his way into the record books running the first 400 in 52.48 and the second 400 in 51.25. Take a look at Korir's brief running career to date:

Korir's Career Timeline:

May 28th, 2016
Finishes 8th at the Kenya national championships in his first year of running.

January 20th, 2017
Breaks the 600m indoor world record running 1:14.97.

March 11th, 2017
Wins the NCAA Indoor 800m championship after dealing with an injury from mid-Feb.

April 15th, 2017
Runs 1:47.19, splitting 55.88/51.31

April 22nd, 2017
Runs 44.67 in the 400 becoming the 7th man ever to have PBs under 1:47 and 45.00.

April 29th, 2017
Runs 1:43.73 #2 NCAA All-Time with a negative split

The UTEP freshman continues to turn heads in the running world. And based on his early success, it's not hyperbolic to compare him to David Rudisha, who went to the same high school. Korir is currently 21; here were then-21-year-old David Rudisha's personal bests by April 2010.

800m PB: 1:42.01
400m PB: 45.50

Obviously, by age 21, Rudisha had also established himself among the great runners in championship races, something Korir has yet to do. However, Korir's talent is clear evidence that he could be one of Kenya's star half-milers for many years to come.

Only three men in history have personal bests under 1:44 and 45.00. Korir is the youngest to do so...

400 PB	800 PB	ATHLETE (COUNTRY)	AGE	YEAR
44.67	1:43.73	Emmanuel Korir (Kenya)	21	2017
44.59	1:43.20	Mark Everett (USA)	22	1991
44.26	1:43.44	Alberto Juantorena (Cuba)	25	1976