Heriot-Watt student Calum Robb successfully defended his world heavyweight title by taking gold at the World Wado Karate Championships in Japan on Sunday 15 August.
Calum, from Haddington, was the sole Scottish representative at the games which were last held two years ago in Canada.
As Calum travelled back from Sunday's event, his proud dad Robert said: 'Japan is the birthplace of karate and consequently they host the event which is held every two years, every fourth year. Over thirty countries sent fighters and teams to this prestigious event.
'Calum was fighting in the Heavyweight category, which had 29 entrants.
'On the first day of competition Calum progressed through the early rounds beating some excellent fighters from Japan and France on route, to make the last four. On the second day of competition Calum met an Iranian fighter in the semi final and an Italian fighter in the final, winning both matches to lift the Gold Medal, and the acclaimed "World" title which accompanied it.'
Calum is currently studying for a PhD and trains at the Meadowbank Karate Club.