Australian Jason Day has teed off in the third round of the U.S. Open about 24 hours after collapsing at the end of his second round due to vertigo.

Day arrived on the practice range at Chambers Bay around 12:55 p.m. local time and proceeded to hit balls for 40 minutes. Day holed his second practice chip from about 25 yards and went through every club in his bag before taking a shuttle to the first tee.

Day's status was in question after he was overcome by dizziness and collapsed on his final hole at the U.S. Open on Friday. Day was walking down the ninth hole — his last of the day — and fell over to his left.

Day, who has dealt with vertigo in the past, was treated by doctors on Friday evening.