Ireland's Leona Maguire has shot a dazzling nine-under 63 to catch Lydia Ko in the LPGA Tour Championship and set up a duel for the richest prize in women's golf.
At stake on Sunday at Tiburon Golf Club in Florida is $US2 million ($3 million) to the winner.
Maguire, one of 11 first-time winners on the LPGA Tour this year, is too far back in the points race to win LPGA player of the year, though earning that size of winner's cheque would make up for that. If she wins, it would be nearly twice what Maguire has made in 23 previous events.
