Ben Ainslie's Ineos Team UK are into the final of the Challenger Series - which will determine who faces Team New Zealand for the America's Cup in March.
The team, on board 'Britannia', won a third round-robin race against Italy's Luna Rossa on Saturday, making it their fifth victory from five starts.
The challenger series began on 15 January and runs until 22 February, starting with a round-robin where the three challengers compete in eight races.
The round-robin winner - Ineos Team UK - proceeds to the final, while the other two challengers face off in a seven-race semi-final.
The final begins on 13 February, with the first yacht to win seven races qualifying to face Team New Zealand for the America's Cup from 6-21 March.