It was the second time Green had had an eagle at the 451-yard, par-five 18th in the play-off as both she and Davies had already achieved one on the third extra hole. The play-off format required the playing of holes 18 and 10, repeating that order until a winner was determined.
Green, who was playing one group in front of Davies, forced the play- off when she birdied the closing hole for a 68, which put her at 203 for 54 holes. Davies had a chance to win in regulation, but her three-foot putt for birdie lipped the cup and she finished on 70.
Davies' tee shot on the final play-off hole found the left rough and left her obstructed by trees. After Green used a six-iron on her second shot to get within four feet of the pin, Davies was forced to go for the green. Her second shot hit a tree and ricocheted.
Stewart Cink, a rookie, earned his first PGA Tour victory on Sunday at the Greater Hartford Open at Cromwell, Connecticut, and with a final-round 66, equalled Greg Norman's 1995 tournament scoring record of 267, 13 under par.
"I'll never forget this day, to be on top of one of these fields - to win, that's really something." Cink, who at 24 continues the trend of young winners on the PGA Tour, said. The only tour rookie to win this year, Cink's victory was worth $270,000 (pounds 164,000) and gave him earnings of $496,878 for the season.Reuse content