By Peter Rutherford INCHEON, South Korea (Reuters) - American Alison Lee shot a four-under 68 to move three strokes clear of the field after the third round of the KEB Hana Bank Championship on Saturday as her main title challengers at the $2 million co-sanctioned event in South Korea faltered. Lee started the day a shot behind overnight leader Brittany Lang with Cristie Kerr and South Korean number one Park Sung-hyun in hot pursuit two strokes further back. Lee missed a short putt on the third hole but hit back straight away with four consecutive birdies. More...