As firsts go, this was one for the ages.

At no time in the previous 55 Hawaii State Amateur Stroke Play Championships has a playoff involved a former LPGA player who regained her amateur status at 50 taking on a high school sophomore who could be her daughter.

With an even younger daughter looking on, learning.

Patricia Ehrhart birdied the second playoff hole to finally silence reigning Interscholastic League of Honolulu champion Karissa Kilby, who turned 16 last week.

It happened 11 days ago, in the final round at Pearl Country Club. Both rallied from big numbers. Kilby, who shot 79 in the second round, was 1 under over the weekend — just enough to catch Ehrhart, who opened with 77, but was 3 over the final three days.

Those scores were notable, in a tournament where Tyler Ota defended his overall championship with a total of 5-under 283 and won by nine.

Ota, the Hawaii State Golf Association’s player of the year the last five years, is only the fifth to win back-to-back state amateurs. He had two of just 13 sub-par rounds — and one of just a trio of scores in the 60s — over four windy days.

Kauai’s Jonathan Ota had another, the final day, to win the senior championship. In the Mid-Amateur (25-under) Flight, the lowest Tokyo’s Heikichi Katsuta could go was even-par 72, on the final day, to win by one.

Kilby had the only sub-par score in the women’s flight, now in its fourth year, closing with 71.

“She was playing pretty decent all day obviously and I knew we were kind of around the same number,” Kilby recalls. “Then at 17, she’s like 40 yards out on her third shot and she sunk it. I thought it was done, but I wasn’t going to give up.”

Ehrhart missed a 5-footer to win on the final hole and both missed birdie putts within 6 feet on the first extra hole, after “Karissa drove it about 70 yards past me,” Ehrhart said.

It would end minutes later when Ehrhart, who won the 1986 Illinois State Open at age 20, stuck her approach shot 6 feet from the hole.

“I got a little excited after that and hit it over the green,” Kilby said. “I knew she was going to make that birdie putt so I did my best to make the next shot and it just kept going.”

Game over, or maybe game just beginning, for Kilby and Scarlett Schremmer — Ehrhart’s youngest daughter.

The Ewa Elementary sixth-grader finished a few points from qualifying for next weekend’s Drive, Chip and Putt National Finals and is as focused on the game now as her mother has been since she took it up at age 9.

Ehrhart played mini-tours in the U.S., Europe and Asia, led the money list on the LPGA’s Futures (now Symetra) Tour and played in the 1998 LPGA Cup Noodles Hawaiian Ladies Open after qualifying for the LPGA Tour with a 20-foot birdie putt on the last hole.

Then she raised three daughters. Scarlett’s older sisters Mason and Lola, both older than Kilby, are on the Margaritaville Surf Team captained by Jimmy Buffet.

Ehrhart got her amateur status back in 2014, a year before she turned 50, and began making an impact again at USGA national events. She was also 23rd in last year’s inaugural U.S. Senior Women’s Open.

Scarlett, who often caddies for her mom on the mainland, was taking it all in at Pearl. So was Kilby, who is 5 foot 7 and has been attracting college coaches’ attention since eighth grade.

Her coach, along with father Mark, is Casey Nakama. The Hawaii Golf Hall of Famer was surprised when Kilby qualified for a major junior event at 13. Nothing she does now surprises him.

“All the coaches on the mainland have a good look at her when they see she’s big,” Nakama says. “Most girls that tall are playing volleyball and basketball. When I get a girl over 5-6 I get excited because potentially these girls can be pretty good.”

Ehrhart also likes Kilby’s lanky look and says flatly “she is developing a great game.”

Ehrhart was impressed with all the high school golfers she saw at the state amateur.

“All those little girls — they’re not little, they just seem little because they are my daughters’ ages — are cute,” she says, “and I’m impressed by their composure at that age on the golf course.”

Kilby, who played three rounds with Ehrhart at Pearl and has competed against her at other events, is impressed with something more in Ehrhart.

“She’s always a very kind woman, but she has this really competitive attitude,” Kilby says. “She holds herself well, puts out a really confident and strong image. I really respect that. She doesn’t lose focus.”

Nakama wants her to remember that, and told her the playoff loss will come back to benefit her.

“She was bummed little bit, but just the fact she was in contention and had the opportunity … I always tell her your best lesson is going to be by failing,” he said. “You lose some tournaments and that’s the best lesson. She’s going to be fine.”

After 23 years at Olomana Golf Links — where he helped nurture Michelle Wie’s game, among many others — Nakama’s Golf Development Center is now located at Pearl, Mililani and Bay View. All three sites start classes again the weekend of April 6-8. Nakama works with about 150 kids.