With a new putter and her husband on the bag, Lauren Coughlin holds a two shot lead after the first round of The Chevron Championship, whilst defending champion Lilia Vu withdraws

Lauren Coughlin made two changes last month, having her husband John on the bag and changing her putter. Both seem to be going well as the American holds a two shot lead after the first round of The Chevron Championship, after shooting a bogey free 66.

"I think my husband and I, just had a really good game plan and just wasn't trying to be too aggressive out there. Just trying to take a 30-footer or I might have a chip here or there, just knowing that that's the appropriate place to be. Just not trying to be too aggressive in certain spots and taking what - certainly there's some holes, good pins and stuff that you can go at stuff, but overall I was just trying to take what it would give me and not trying to force anything."

Trying not to force anything was the perfect game plan, as she started with two birdies on 10 and 11, with a third on 18 before heading into the front nine, making three more birdies on two, four and five.

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Coughlin admitted that she has given John three weeks to see whether they will be able to work together so closely, but so far, so good and she is already seeing the benefits:

"He's really good at talking through everything when I want to get really fast and make a decision really quickly. He is really good at putting all the work in, all the extra work, all the extra walking, all the extra making sure the strategy is really good and double checking everything. But he's always been really good with how he talks to me and communicates what he thinks I need to do and how I need to do it."

The 31-year-old also has her parents who live near the course, so she has her own bed to sleep in this week. She's sure to come back well rested for her second round on Friday when she'll be teeing off at 12:15pm local time.

But who did Coughlin think was her main competitor? "Nelly, of course. She's everybody's competition."

The hot favourite coming into this week was Nelly Korda and her first round did not disappoint. A slightly more colourful card than Coughlin but four birdies in the last six holes of her round sees her two shots back at four-under-par. Alongside the World Number one is American Marina Alex and Japan's Minami Katsu, who was playing with Coughlin.

Defending Champion Lilia Vu withdraws

It was sad news from defending Champion Lilia Vu. before the American had even had a chance to take her first tee shot, the two-time Major champion had to make the difficult decision to withdraw from The Chevron Championship.

In a statement released on her social media channels, the American said:

"I am so sorry to have to withdraw from The Chevron Championship, as I was really looking forward to defending my first Major title. I have been dealing with a back injury for a while now. Some days are better than others, and today was unfortunately not a good day. During my normal warm-up routine, I had severe discomfort in my back and I felt that I could not compete up to my standards and made the decision to withdraw from the tournament ahead of my tee time. I am planning to return home to see my doctors immediately to determine the best appropriate next steps.

"I want to thank everyone at Chevron for their support and understanding. I am so proud to be a Chevron champion and can't wait to get back next year. Thank you as well to the fans and volunteers at the course - you are in for a wonderful four days."

Angel Yin has also withdrawn but after the first round due to an ankle injury.

Everyone at Women & Golf wishes Lilia and Angel a speedy recovery.

Round two of The Chevron Championship tees off at 7:15am (ET) with coverage commencing on Sky Sports Golf at 3pm (BST). View the full championship leaderboard here.