Alistair Brownlee gained revenge on brother Jonny with victory in the World Triathlon Series race in Stockholm.
The Olympic champion, 25,
lost to his younger brother in Hamburg
but won in Sweden after moving clear of the rest of the field on the bike stage.
World Series Standings
- Alistair Brownlee (GB) 3,140 pts
- Jonny Brownlee (GB) 3,085
- Javier Gomez (Spa) 3,020
He finished 14 seconds ahead of Spain's Javier Gomez with Jonny Brownlee, 23, in third a further 23 seconds back.
The British pair top the standings ahead of next month's Grand Final, with Alistair Brownlee leading by 55 points.
Sunday's win was the 15th World Triathlon Series victory of his career and ensures an exciting finale in Hyde Park over the Olympic course on Sunday, 15 September.
Just 120 points separate the older Brownlee brother from Olympic silver medallist Gomez in third, with 1,200 on offer to the Grand Final winner.
It means that if Gomez was to win in London, Alistair Brownlee could finish second and still take the title. But if Jonny Brownlee is victorious, he will prevail overall, regardless of where Alistair finishes.
Both Brownlee brothers were in the leading group after the opening swim in Stockholm and were still well in contention as they started the 10-lap bike phase.
A group of eight fought it out until just under two laps to go when Alistair surprisingly broke away. He had moved five seconds clear with a lap to go before extending that to 21 seconds before the run.
How the ITU World Series works
• Seven races, from April to August, plus September's Grand Final
• Triathletes are awarded points on basis of finishing position in each race
• Winner of a World Series race gets 800, second place 740, third 685, fourth 633, fifth 586
• Bigger points on offer in Grand Final - 1,200 for first, 1,110 second, 1,027 third
• Triathlete's final total is best four World Series finishes plus Grand Final
• World champion decided by those final totals after Grand Final
He comfortably maintained his advantage on the final leg of the race to finish in one hour 43 minutes 13 seconds.
"It has been a year of injuries and disaster and not really wanting to turn up, but it is all about winning when I am not having a good day, and finding finding ways to do that," he said.
"I was going better than I thought. I've had a good last two weeks and now I have another three weeks before London so I can be pretty fit, but Javier is pretty fit as well so it should be a great race.
"I will try my best and that is all you can ask."
Behind him, brother Jonny and Gomez battled it out together for second and third on the run but the Spaniard was the stronger and kicked away with just over a lap to go.
The younger Brownlee, who won bronze at London 2012, had no complaints with his third place.
"That was a really hard race," he admitted. "I knew before it would be tough but it was a fair race and they beat me fair and square."