"Other than that, I thought the ball striking was fairly good. Hopefully be able to roll a few more in. Yeah, definitely a solid start to this tournament."
Maguire is still trying to become Ireland's first winner on the LPGA Tour. Her best result is a runner-up finish at tournaments in Michigan and Hawaii this year.
For now, she happily is best known for going unbeaten in five matches to lead Europe to a Solheim Cup victory two months ago.
Maguire put on a clinic by hitting every fairway and taking only 24 putts.
"It was just really, really solid," she said. "Hit a lot of greens gave myself a lot of chances and rolled in some nice putts... Yeah, it's all just clicking nicely."
Fifty players from the 108-player field broke par.
This is the final tournament for the top 60 in the Race to the CME Globe to qualify for the CME Group Tour Championship next week on the Gulf Coast in Naples, where all 60 players will have a shot at a $US1.5 million prize.
- with AP