Wooster, the No.34 seed, edged No.2 seed and three-time champion Ellen Port, 1 up, in the morning Round of 32, then held off Tara Fleming, of Jersey City, N.J., 2 and 1, in the afternoon Round of 16 after building an early 4-up lead.

“It was a real battle in the morning; to beat Ellen Port, I’m just stoked,” said Wooster, 57, of Lysterfield, a suburb of Melbourne. “She’s got game, you know? I played good again this afternoon, and Tara played some good golf to catch me back to 2 up. I got it up and down on 16 and 17 to halve those holes, so that was nice. I’ve got the speed of the greens down; hopefully that will last.”

Port led, 1 up, through 16 holes in the morning, but Wooster took the par-4 17th and 18th holes. No.18, a green that has given the players fits this week, proved to be decisive as Port four-putted from a precarious spot above the hole after hitting the green in regulation to lose to Wooster’s bogey.

“I’m not sure if I’m over last year,” said Wooster of her 3-and-2 loss to Tennant at Orchid Island Golf & Beach Club in Vero Beach, Fla., last October. “I’m just taking one step at a time, but I’ve got a chance. I feel pretty proud of myself for getting this far and that gives me some confidence going forward.”

Tennant, of Portland, Ore., the No.5 seed, defeated Pam Kuong, of Wellesley Hills, Mass., 4 and 3, in the afternoon after eliminating Maggie Leef, of Pewaukee, Wis., 3 and 2, in the morning. Tennant, 52, is attempting to become the first repeat winner of this championship since Port did it in 2012-13.

Tennant is the defending champion of the US Senior Women's Amateur. PHOTO: Steven Gibbons/USGA.

“I think my last 27 holes were better than my first nine,” said Tennant, who was co-medallist in the 2017 championship at her home club, Waverley Country Club. “Once I got through that first nine, I settled down and started hitting some good shots and made some putts when I needed to. It was very windy this afternoon. Conditions were far more difficult, so pars were good.”

Tennant will take on Lynne Cowan, 56, of Rocklin, Calif., who ousted three-time US Women’s Mid-Amateur champion Sarah Ingram, of Nashville, Tenn., 4 and 3, in the afternoon after defeating Julie Massa, of Holt, Mich., 3 and 2, in the morning. Cowan, the No.13 seed, has won more than 40 championships in California, and her furthest advancement in a USGA championship is the semi-finals of the 2008 US Women’s Mid-Amateur at Barton Hills Country Club in Ann Arbor, Mich., where she lost to eventual champion Joan Higgins in 21 holes.

“I tend to lose this match or the one in the morning so this is a bucket-list fulfiller for me,” said Cowan of the traditional Round of 32/Round of 16 day. “I usually can’t get past this hump. I just putted a little better than Sarah, that’s really all it was.”

Wooster will square off against Laura Webb, of the Republic of Ireland, who rallied to win holes 15-17 in the afternoon for a 1-up victory over Kim Keyer-Scott, of Estero, Fla. Webb never led until the 17th hole when she sank a 12-foot birdie putt, then closed out the match by halving No.18 with a par. Webb, the No.7 seed, ousted Mary Jane Hiestand, of Naples, Fla., 2 and 1, in the morning.

Tina Barker, the No.48 seed, ousted medallist Martha Leach, the 2009 US Women’s Mid-Amateur champion, 2 and 1, in the afternoon. Barker, of Fairfield, Calif., bested Suzi Spotleson by an identical score in the morning.

“I played against a lot of great players so far,” said Barker, 60, who is competing in her 16th USGA championship. “Martha is such a fabulous player. I was intimidated because I know she’s such a good player and she is also so nice. I have a lot of respect for her.”

No.3 seed Mary Ann Hayward, of Canada, the 2005 US Women’s Mid-Amateur champion, will square off against No.22 Caryn Wilson, of Rancho Mirage, Calif., in Wednesday’s quarter-final round, while No.24 seed Patricia Ehrhart, of Honolulu, Hawaii, a semi-finalist in this championship in 2017, will take on Barker.

Listen to the Sue Wooster story in episode #1 of The Thing About Golf podcast