Rubuta ci gaba don wannan sakin layi - Karoki ya zama na biyu a Gasar Cin Kofin Duniya ta IAAF ta 2015 a bayan dan kasar Geoffrey Kipsang bayan ya jagoranci mafi yawan tseren. Ya wakilci Kenya a tseren mita 10,000 a Gasar Cin Kofin Duniya ta 2015 a Wasannin motsa jiki kuma ya rasa lambar yabo a matsayi na hudu. An samu lambobin yabo a gasar tseren rabin tseren Marathon ta duniya ta 2016
, inda ya zama na biyu ga dan uwansa Geoffrey Kipsang Kamworor kuma ya raba taken kungiyar.