Jason Kenny produced a thrilling come-from-behind victory against Matthew Glaetzer to win gold in the men's sprint at the UCI Track World Championship on Saturday.
The Briton lost the first of the best-of-three final against the Australian, but fought back to take the next two in a pulsating contest at Lee Valley VeloPark to win his first sprint world title since 2011.
Following that success, Kenny went on to clinch gold at the 2012 Olympic Games in London and his victory is sure to provide a confidence boost ahead of this year's Rio Olympics.
It was not all plain sailing, though. In race one, Glaetzer forced Kenny to go the long way around and edged over the line first.
Kenny roared back brilliantly when he led out in the second contest, and he held the inside line to keep Glaetzer at bay and set up a thrilling decider.
And the 27-year-old delighted a raucous home crowd by taking Glaetzer on the line and clinching the rainbow jersey, having been forced to take the outside line.
"I feel better now! Those last two rides were tough and very close together," he told BBC Sport.
"I got a bit of luck that he had to lead it out. It was not the prettiest race, it was a slog match."
Fernando Gaviria retained his title in the men's omnium after a thrilling final points race.
The Colombian was level on points with Roger Kluge of Germany and Glenn O'Shea of Australia, who each took two laps to finish tied with Gavrilia on 191 points, however the champion took gold due to his superior position in the finishing sprint.
Poland's Katarzyna Pawlowska won her third world title in the women's points race, but the event was overshadowed by a late crash.
Caroline Ryan of Ireland was involved in a three-rider crash and was put in a neck brace. However, she appeared to be conscious and responsive on the way to hospital. Early reports suggested she has a broken collarbone.
In the last contest of the night, America's Sarah Hammer won the elimination race in the women's omnium.
Hammer and Britain's Laura Trott - partner of Kenny - were the last riders standing, and the former edged home for the win.
Hammer leads Trott in the standings on countback with both on 112 points.