Nixon Kiplimo Chepseba (born 12 December 1990) (Keiyo in Kenya) is a Kenyan middle-distance runner (1.84m) who specializes in the 1500 metres.
Chepseba gained his first international selection for the 2009 African Junior Athletics Championships via a trial event at Nyayo National Stadium.
[2] He made his European debut later that year, winning at the Antwerp Gala and setting a meet record of 2:18.61 min for the 1000 m at the Athletics Bridge in Slovakia.
[7][8] He continued his winning streak outdoors with consecutive 2011 Diamond League victories in Doha and Shanghai, setting a meet record of 3:31.42 min to beat the Olympic champion Asbel Kiprop at the latter event.
He turned his attention to the Diamond League circuit instead and a win at the Weltklasse Zurich meet saw him top the rankings to become the 2011 Diamond League winner over 1500 m.[10] He ended his year on a high, setting a meet record and personal best of 3:30.94 min to win at the Hanžeković Memorial.