Leonard Kirwa Kosencha
|Born||21 August 1994|
|Achievements and titles|
|Personal best(s)||800 m: 1:43.40 (Monaco 2012)|
He won a gold medal at the 800 m at the 2011 World Youth Championships in Athletics. By running 1:44.08 at these Championships, he also broke Belal Mansoor Ali's old world youth best of 1:44.34, which had stood since June 17, 2005. Ethiopia's Mohammed Aman broke Kosencha's short-standing world youth best that September. He won the silver medal at the 2011 Commonwealth Youth Games that season.
|800 m||1:43.40 s||20 July 2012||Monaco|
- Leonard Kosencha profile at Tilastopaja
- "Kosencha blazes 1:44.08 World Youth record in 800m". Universal Sports. 9 July 2011. Archived from the original on 11 July 2011.
- "Kosencha blazes 1:44.08 World Youth best". IAAF. 9 July 2011.
- "David Rudisha suffers rare loss in Rieti". Universal Sports. 9 July 2011.
- Johnson, Len (2012-05-19). Liu Xiang and G. Dibaba the standouts in rainy Shanghai – Samsung Diamond League. IAAF. Retrieved on 2012-05-20.
Belal Mansoor Ali
|Boys' World Youth Best Holder, 800 metres
9 July 2011 – 10 September 2011
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