Wilson Kipsang set a new world record in Sunday's Berlin Marathon with a time of two hours, three minutes and 23 seconds.
The Kenyan broke the previous record set by compatriot Patrick Makau in the same city in 2011.
Makau's time of 2hrs 3mins and 42 secs had been in Kipsang's sights heading into the 40th staging of the marathon around the German capital and the 31-year-old delivered in style, coming home well ahead of fellow Kenyans Eliud Kipchoge (2:04.05) and Geoffrey Kipsang (2:06.26).
Kipsang points to the proof after his world record run
"I was feeling strong so I decided to push," Wilson Kipsang told Eurosport.
"I'm very happy that I've won and at breaking the world record."
Wilson Kipsang's achievement marks the ninth time the Berlin race has been the setting for a new world record, and the London 2012 bronze medallist sees no reason why he cannot set further records in the future.
"If I prepare very well, and with the same shape (I can go faster). Today there was a lot of wind, I was really fighting," he said.