|ITF W60 - Голд Коуст||12/03 01:00||29|| Talia Gibson v Оливиа Гадецки ||7-5,6-2|
|ITF W60 - Голд Коуст||12/02 01:00||28|| Miho Kuramochi v Оливиа Гадецки ||1-6,6-7|
|ITF W60 - Голд Коуст||12/01 01:55||27||Ивана Попович v Оливиа Гадецки||3-6,3-6|
|ITF W60 - Голд Коуст||11/30 01:05||26||Киса Йошиока v Оливиа Гадецки||2-6,0-6|
|ITF W60 - Голд Коуст||11/29 03:15||25|| Фангжоу Лю v Оливиа Гадецки ||6-7,2-6|
|ITF W60 - Бризбейн||11/21 02:40||25|| Оливиа Гадецки v Джоанна Гарланд ||6-7,2-6|
|ITF W60 - Глазгоу||10/26 10:40||26||Оливиа Гадецки v Хана Клугман||Retired|
|ITF W60 - Глазгоу||10/25 10:55||25|| Оливиа Гадецки v Barbora Palicova ||6-4,7-5|
|ITF W100 - Шросбъри||10/20 09:25||27|| Оливиа Гадецки v Сюзън Ламенс ||2-6,4-6|
|ITF W100 - Шросбъри||10/19 11:50||26|| Оливиа Гадецки v Barbora Palicova ||6-3,6-0|
|ITF W100 - Шросбъри||10/18 11:55||25|| Оливиа Гадецки v Маргу Роуврой ||3-6,7-6,6-4|
|ITF W40 - Куинта до Лаго||10/12 09:00||26|| Оливиа Гадецки v Еден Силва ||6-7,1-6|
Olivia Gadecki (born 24 April 2002) is a professional tennis player from Australia. She has a career-high singles ranking of world No. 127, reached on 16 October 2023, and a best doubles rank of world No. 94, achieved on 23 October 2023.
She made her WTA Tour debut at the 2021 Gippsland Trophy, having received a wildcard into the main draw.
Gadecki made her main-draw debut on the ITF Circuit in Brisbane, in September 2016.
In January 2021, Gadecki made the second round of the Australian Open qualifying. She was awarded a wildcard into the Gippsland Trophy, where she made her WTA Tour main-draw debut.
In February, Gadecki won her first WTA Tour singles main-draw match at the Phillip Island Trophy. She followed this up with her first top-10 win, defeating the top seed, former Australian Open champion and world No. 4, Sofia Kenin. With Gadecki's career-high ranking being No. 988 in the world, this was Kenin's worst defeat by ranking on the WTA Tour. Gadecki lost in the third round. The following week, she re-entered the WTA rankings at No. 642. In May 2021, Gadecki won her first professional singles title in Turkey.
In August 2021, she won the singles and doubles titles at Vigo, Spain. It was her second singles title and fifth doubles title.
On 20 September 2021, Gadecki debuted in the Australian top 10 in singles and doubles rankings. She ended the year with a singles ranking of 238.
Gadecki did not enter the 2022 Australian Open due to the requirement for all players to be vaccinated against COVID-19 and her anti-vaccination stance.
In April 2022, Gadecki broke into the top 200, after reaching three finals from four Australian Pro Tour appearances.
She made her debut at the Australian Open as a wildcard. She defeated Polina Kudermetova in the first round. As a result, her ranking climbed to No. 144, on 20 February 2023.