South Korean Somi Lee has set a cracking pace as Australia's golf aces made encouraging starts to the LPGA Tour's mega-money season-ending championship in Florida.

World number four Minjee Lee birdied the penultimate hole to match the 4-under-par 68s of Grace Kim and Steph Kyriacou as Tiburon Golf Club came under attack.

Tour Championship

Australians in round one

Minjee Lee - 4-under (68)

Grace Kim - 4-under (68)

Steph Kyriacou - 4-under (68)

Hannah Green - 4-over (76)

Only 17 players in the elite 60-strong field for the $US11 million ($17.1 million) Tour Championship failed to break par during the opening round in Naples.

With seven birdies and an eagle at the par-5 17th hole, Lee took full advantage of the benign conditions on Thursday (Friday AEST).

"It's an honour playing my

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