Delfina Acosta
(Miami Athletics Photo)

Fierro, the overnight leader, bogeyed the first hole before righting the ship on her way to a 1-under 71. Her first of four birdies came on the 6th hole but it was the back-to-back birdies on the 16th and 17th holes that salvaged the round. Fierro was cruising along at 1-under through 13 holes until she slipped up with 14th and 15th hole bogeys.

Delfina Acosta, a senior at Miami, turned in the round of the week to reach the top of the leaderboard. Acosta was able to fire a 5-under 67 and overcome a four-stroke deficit at the start of the day.

A bogey on No. 14 dropped Acosta to 2-under for the round but a trio of birdies to close pushed her to 5-under. Overall Acosta birdied seven-times and bogeyed twice.

Paraguay's Sofia Garcia, the two-time defending champion, will begin the weekend in third place at 1-under and as the final player under-par.

Seven players are even-par and tied for fourth and included in the group is American Julia Potter. The two-time U.S. Women's Mid-Amateur has paired consecutive rounds of even-par 72's.

Potter got off to a fast start with 2nd and 3rd hole birdies, however in the middle of the round she struggled with four bogey's from Nos. 6-10. Birdies on Nos. 14 and 15 brought her back to level for the day.

Fellow American and four-time U.S. Women's Mid-Amateur champion Meghan Stasi is 6-over and tied for 22nd.