She won the first Olympic triathlon silver medal 16 years ago, but helping win the first Paralympic triathlon gold in Rio was icing on the birthday cake for legendary ironwoman Michellie Jones.
The Sydney 2000 Olympian, who celebrated her 47th birthday this week, teamed up with debutante Katie Kelly as her sighted guide to win the sport's inaugural Paralympic title on Brazil's Copacabana beach on Sunday.
"This is the best birthday present, thanks KK! We don't have a cake, but the gold medal will do just fine," Jones said.
"I'm just so happy that I got to be part of her ride."
Kelly, who is legally blind, came out of the water fourth in the women's PT5 event, but quickly took the lead on the cycle leg and never looked back.
She powered home in the final run on Sunday (Monday AEST), winning by more than a minute with Jones acting as her eyes the whole way.
"It's something that you wish for but try not to dream about," Kelly said.
"It's just special to be here with MJ, she's given me so much."
Jones, a three-time world champion in triathlon, said the experience topped the lot including her podium finish at the Sydney Olympics.
"To me this is the best thing I've ever done. When I think of everything that KK has been through... she never lets anything stand in her way," Jones said.
Kelly, who has Usher syndrome, grew up wearing hearing aids and was told at 25 she would start losing her vision.
Having competed as an able-bodied triathlete and marathon runner, the 41-year-old set her sights on the Paralympics in January 2015 when her sight had deteriorated to a legally blind status.
"Disability doesn't define you, it's what you do with it that does," Kelly said.
Adding to Australia's medal tally on day four were swimmers Maddison Elliot and Lakeisha Patterson, who bagged gold and silver respectively in the women's S8 100m freestyle.
Debutant Tim Disken took out third place in the men's SM9 200m individual medley, while London Paralympian Daniel Fox scored bronze in the men's S14 200m freestyle.
Australia's co-skipper Kurt Fearnley won his 12th Paralympic medal over five Games with a bronze in the men's T54 (wheelchair) 5000m final.
And rookie Taylor Doyle clinched silver in the women's T38 long jump.
Veteran wheelchair racer Angela Ballard collected her second medal of the Games with bronze in the T53 400m.
And Rower Erik Horrie snapped up silver in the ASM single scull.
