Q. All right, Brianna, 4-under round today on this tricky courses. Can you just tell me about the day?
BRIANNA DO: I got off to a pretty hot start. I think I was 4-under through 5, so that helped a lot.
And then I kind of just kept it pretty steady coming in. I think the back nine plays a little tougher than the front, and so just giving myself opportunities on the back and then finishing with a birdie on 18.
Q. Talk me through the eagle there on I think 5.
BRIANNA DO: Yeah. I hit a good drive kind of down the left side. I kind of had a perfect number for a 5-wood. I think it landed just on the front, rolled all the way up to about seven feet and I made the putt. Pretty stress-free eagle.
Q. What are some of the challenges or tricky parts of this course that you really have to do well here?
BRIANNA DO: I think part of it is definitely the weather. It's pretty hot and humid. Just trying to maintain good levels out there with hydration and energy.
It's pretty demanding off the tee boxes, so just putting yourself in play. The greens are pretty small as well, so everything is pretty difficult around here.
Q. Speaking of the heat, how have you managed that not just today, but over the last couple days? How have you prepared for the each day?
BRIANNA DO: I was pretty conscious how I was feeling every day. I flew in on Sunday and I had all intentions of playing an 18-hole practice round on Monday.
After being out in the heat a little bit I was like, you know, I think nine holes is enough. Just listening to my body and how I felt through the week coming into today.
Q. Is this your first start this season on Tour?
BRIANNA DO: Yeah. Yep.
Q. Not a bad place to start, Mexico. How excited were you to get in the field? And now to see yourself at the top of the leaderboard, what does what mean to you?
BRIANNA DO: It was pretty cool getting into this event. I had never really played here in Cancun area. I've played as a junior golfer in Guadalajara, and that was a lot of fun.
I don't know, I kind of came in wanting to capitalize on the opportunity and doing the best that I can and so I put up a good number today.
See how the next three days goes.
FastScripts Transcript by ASAP Sports