The final day at Henley saw 40 crews, 20 races and one stunning setting with the River Thames bathed in sunshine. The world's best rowers were in action with crews rowing two abreast over the 2,112-metre-long regatta course. The biggest upset of the week was that Olympic and World Champion Mahe Drysdale of New Zealand lost the men's single sculls. Racing into a headwind, 37-year-old Drysdale couldn't catch his Rio-bound rival, Belgium’s Hannes Obreno who defeated him by 2 lengths. Obreno’s win denied Drysdale of matching Australian Stuart MacKenzie’s record six wins in the Diamond Challenge Sculls, leaving Drysdale's tally at five. After the race Obreno, who recently won a Regatta in Lucerne to qualify for the Olympics said, “I feel amazing, when I crossed the line, just wow! I came here in preparation for Rio with no expectations but the heats were smooth and I have felt good throughout the week. Today, I managed to always keep ahead, every time he (Drysdale) pushed his rate up I responded. I know I have a fantastic sprint, but so does Mahe, but today my boat was faster and I was able to hold him off”.