| Doubles | |
|---|---|
| 2018 Mercer Tennis Classic | |
| Champions |  Caty McNally Jessica Pegula |
| Runners-up |  Anna Danilina Ingrid Neel |
| Score | 6–1, 5–7, [11–9] |
Kaitlyn Christian and Sabrina Santamaria were the defending champions, but chose not to participate.
Caty McNally and Jessica Pegula won the title, defeating Anna Danilina and Ingrid Neel in the final, 6–1, 5–7, [11–9].
Alexa Guarachi / 
Giuliana Olmos (semifinals) Sophie Chang / Alexandra Mueller (first round) Nicole Gibbs / Asia Muhammad (first round) Lauren Davis / Christina McHale (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | A Guarachi G Olmos | 6 | 6 | ||||||||||||||||||||||||
 V Muntean  G Talabă | 0 | 1 | 1 | A Guarachi G Olmos | 6 | 4 | [13] | ||||||||||||||||||||
| S Marand W Osuigwe | 6 | 6 | S Marand W Osuigwe | 4 | 6 | [11] | |||||||||||||||||||||
| WC | H Baptiste P Stearns | 1 | 4 | 1 | A Guarachi G Olmos | 6 | 3 | [7] | |||||||||||||||||||
| 4 | L Davis C McHale | 6 | 1 | [10] | A Danilina I Neel | 3 | 6 | [10] | |||||||||||||||||||
 C-y Hsu  J Rompies | 4 | 6 | [7] | 4 | L Davis C McHale | 77 | 4 | [5] | |||||||||||||||||||
| A Danilina I Neel | w/o | A Danilina I Neel | 63 | 6 | [10] | ||||||||||||||||||||||
| M Brengle A Kratzer | A Danilina I Neel | 1 | 7 | [9] | |||||||||||||||||||||||
 C Simmonds  A Uzcátegui | 0 | 0 | C McNally J Pegula | 6 | 5 | [11] | |||||||||||||||||||||
Q Gleason  L Stefani | 6 | 6 | Q Gleason L Stefani | 6 | 3 | [1] | |||||||||||||||||||||
| C McNally J Pegula | 6 | 6 | C McNally J Pegula | 4 | 6 | [10] | |||||||||||||||||||||
| 3 | N Gibbs A Muhammad | 3 | 2 | C McNally J Pegula | 6 | 6 | |||||||||||||||||||||
| PC Gonçalves B Haddad Maia | 6 | 7 | B Gumulya  A Veselinović | 2 | 1 | ||||||||||||||||||||||
 U Eikeri AS Sánchez | 4 | 5 | PC Gonçalves B Haddad Maia | 2 | 6 | [6] | |||||||||||||||||||||
| B Gumulya A Veselinović | 6 | 2 | [10] | B Gumulya A Veselinović | 6 | 4 | [10] | ||||||||||||||||||||
| 2 | S Chang A Mueller | 3 | 6 | [4] | |||||||||||||||||||||||
Goran Ivanišević defeated Pete Sampras 6–4, 6–4 in the final to secure the title.
Rachel McQuillan and Lisa McShea were the defending champions but lost in the first round to Kerry-Anne Guse and Alicia Molik.
The 1999 Thalgo Australian Women's Hardcourts singles was the singles event of the third edition of the Thalgo Australian Women's Hardcourts; a WTA Tier III tournament held in the Gold Coast. Ai Sugiyama was the defending champion but lost in the semifinals to Patty Schnyder.
Martina Navratilova and Emilio Sánchez were the defending champions but did not compete that year.
Jana Novotná and Jim Pugh were the defending champions but lost in the second round to Zina Garrison and Sherwood Stewart.
Elna Reinach and Patrick Galbraith were the defending champions but lost in the first round to Mary Pierce and Luke Jensen.
Patrick McEnroe was the defending champion but lost in the second round to Richard Fromberg.
Anastasia Myskina was the defending champion, but chose not to participate that year.
Mark Edmondson and Kim Warwick defeated the defending champions Paul McNamee and Peter McNamara in the final, 7–5, 6–4 to win the men's doubles tennis title at the 1980 Australian Open.
The 1999 Toyota Princess Cup doubles was the tennis doubles event of the third edition of the first hardcourt tournament after the US Open. Anna Kournikova and Monica Seles were the defending champions, but neither competed this time.
Lisa McShea and Milagros Sequera were the defending champions, but Sequera did not compete this year. McShea teamed up with Abigail Spears and lost in semifinals to tournament runners-up Marta Domachowska and Marlene Weingärtner.
Mark Edmondson and Kim Warwick were the defending champions.
Wojciech Fibak and Kim Warwick were the defending champions.
Byron Black and Jonathan Stark were the defending champions, but lost in second round to Jamie Morgan and Michael Tebbutt.
Alexander and Mischa Zverev were the defending champions, but Alexander chose not to participate this year. Mischa played alongside Karen Khachanov, but lost in the first round to Ben McLachlan and Hugo Nys.
Jim Courier and Mark Knowles were the defending champions, but lost in semifinals to Byron Black and Jonathan Stark.
Jacco Eltingh and Paul Haarhuis were the defending champions, but lost in second round to Jan Apell and Mike Bauer.
Sabine Appelmans was the defending champion, but did not compete this year.
Jeon Mi-ra and Cho Yoon-jeong were the defending champions from 2004, but both decided not to compete in 2005.
Naoko Sawamatsu successfully defended her title by defeating Florencia Labat 7–5, 7–5 in the final.