MONACO: Formula One championship leader Jenson Button mastered Monaco's treacherous streets yesterday to chalk up his fifth victory in six races and lead another Brawn one-two finish.

The Briton's sixth career victory, in an untroubled drive from pole position on a sunny afternoon, stretched his lead over teammate Rubens Barrichello to 16 points with 11 races remaining.

Button, who took the chequered flag 7.6 seconds clear of the Brazilian after a masterfully smooth performance around a tight and twisting track lined by metal barriers, has 51 while Barrichello has 35.