Kim needed only 24 putts at TPC Boston, while Miyu Yamashita followed her victory in Canada with a birdie-filled 65 to share second place.

A subtle equipment change helped Lee rediscover his best golf at East Lake, where he leads by two shots after a low-scoring opening round.

The LET Order of Merit leader made nine birdies in wet conditions at The K Club.

The Northern Irishman reached 5-under through 13 holes before storms halted play for a third time.

The FedExCup finale gives all 30 qualifiers an equal starting score, leaving four rounds to decide who claims the trophy and its $10 million prize.

Lindy Duncan will make her event debut in the Netherlands, while Megan Khang and Rose Zhang return with strong records in American colours.