Ainslie update:

Ben Ainslie gives a masterclass in downwind sailing to make up 70m to pip Dane Hogh-Christensen for third in race two. Ainslie won the first race of the day and is now three points back with two races on Friday and Sunday's medal race to come. 'That was a pivotal day,' says BBC Sport pundit and former Olympic champion Shirley Robertson. 'It was crucial if he is going to stand on top of the podium on Sunday.'