Leona Maguire lost ground on the leaders at the CME Group Tour Championship as a second-round 71 left her sitting on six-under-par.

The Cavan golfer was just three shots off the summit heading into the second round in Florida, but she is now eight strokes behind the leader Celine Boutier.

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The French golfer was in brilliant form as a second successive 65 left her four shots clear of her nearest challenger.

Maguire made an exciting start to her round as she carded two birdies and two bogeys within her opening five holes, but with her putter not really warming up, she could only pick up one shot from there.

Australia's Minjee Lee, Mexico’s Gaby Lopez and Mina Harigae from America are in a tie for second, but they will need to be at their very best to catch Boutier.

Her front nine produced two birdies and a bogey but Boutier picked up an incredible six shots coming in to take control of the tournament in Naples.

"I was a little bit frustrated with my front (nine)," Boutier said. "I left a couple of shots out there so I was really good to get after it on the back. My long game was really solid all day, and I was able to put my shots really close, and that was definitely helpful on the back nine."

The torrid stretch leaves Boutier in great position at the halfway point of the tournament.

"My mindset is the same. One thing I learned being in that position is that it really doesn't mean much right now," Boutier said. "Anything can happen. There is a lot of golf still left. So I'm just going to try to keep doing the same thing tomorrow and the same thing Sunday."