So this is what was wrong with him, apparently...
"„It was only in January this year that we found out why I got all these injuries. The reason was a wrong treatment by the physiotherapist,“ explained Kimetto, who then switched to a physiotherapist in his hometown Eldoret, who also treats former marathon world record holder Wilson Kipsang. „Since January I have no more pains and no injuries anymore. I could train properly without any problems.“"