Here are his seasonal best heading into Worlds or Olympics dating to 2009 : 8 : 01 , 7 : 59 , 8 : 10 , 7 : 55 , 7 : 58 .
This year , Kemboi has a seasonal best of 8 : 14 .
Here are Kemboi 's seasonal best heading into Worlds or Olympics dating to 2009 : 8 : 01 , 7 : 59 , 8 : 10 , 7 : 55 , 7 : 58 .
This year , Kemboi has a seasonal best of 8 : 14 .