 He competed at the 2009 IAAF World Athletics Final (the final edition of the competition) but failed to maintain his form and finished eighth.He ran in the Giro Media Blenio 10K in 2010 and finished in third place behind Moses Mosop and Imane Merga.At the Doha 2012 Diamond League meeting, Mateelong was second to compatriot Paul Koech in the steeplechase, in a new personal best time of 7