Melbourne - British hope Johanna Konta showed no signs of her recent injury troubles Tuesday as she dismantled Madison Brengle to continue the dismal US start to the year's first Grand Slam.
An incredible 12 of the 15 American players on court on day one were dumped out of the event - including women's title fancies Venus Williams, Sloane Stephens and CoCo Vandeweghe plus Jack Sock and John Isner on the men's side.
And Brengle became the unlucky 13th American to head for the exit door after impressive ninth seeded Konta overpowered her 6-3, 6-1 on the back of eight aces and 37 winners in just 66 minutes on Hisense Arena.
The world number 90, who could find just four winners of her own, was always on the back foot against Konta who came into the tournament under a slight injury cloud.
The British number one withdrew from a warm-up event in Brisbane with hip trouble and then lost her Sydney title in the first round.
The Sydney-born Konta, who has made the semi-final and quarter-final in her previous two Australian Open appearances, is a crowd favourite in Melbourne.
"I'm very happy with that match," she said. "She really makes her opponents work for it."
Konta will face another American Bernada Pera on Thursday, when temperatures are expected to be close to 40 Celsius.
"I look forward to the heat, I love it," she added.
Collated results from the Australian Open on Tuesday:
Men's singles
1st round
Jiri Vesely (CZE) bt Vaclav Safranek (CZE) 6-4, 6-3, 6-3
Adrian Mannarino (FRA x26) bt Matteo Berrettini (ITA) 6-4, 6-4, 6-4
Fernando Verdasco (ESP) bt Roberto Bautista (ESP x20) 6-1, 7-5, 7-5
Maximilian Marterer (GER) bt Cedrik-Marcel Stebe (GER) 6-0, 6-3, 6-4
Julien Benneteau (FRA) bt Taro Daniel (JPN) 6-7 (6/8), 7-6 (7/0), 6-4, 6-1
Sam Querrey (USA x13) bt Feliciano Lopez (ESP) 6-3, 6-4, 6-2
Marton Fucsovics (HUN) bt Radu Albot (MDA) 6-2, 6-3, 4-6, 7-5
Nicolas Kicker (ARG) bt Jordan Thompson (AUS) 6-3, 6-1, 4-6, 3-6, 6-3
Lukas Lacko (SVK) bt Milos Raonic (CAN x22) 6-7 (5/7), 7-5, 6-4, 7-6 (7/5)
Stan Wawrinka (SUI x9) bt Ricardas Berankis (LTU) 6-3, 6-4, 2-6, 7-6 (7/2)
Albert Ramos (ESP x21) bt Jared Donaldson (USA) 6-2, 6-3, 6-4
Peter Gojowczyk (GER) bt Mikhail Kukushkin (KAZ) 6-3, 6-3, 6-1
Alexander Zverev (GER x4) bt Thomas Fabbiano (ITA) 6-1, 7-6 (7/5), 7-5
David Goffin (BEL x7) bt Matthias Bachinger (GER) 6-7 (3/7), 6-3, 6-2, 6-4
Evgeny Donskoy (RUS) bt Florian Mayer (GER) 6-4, 6-4, 6-4
Lorenzo Sonego (ITA) bt Robin Haase (NED) 6-3, 7-5, 6-7 (6/8), 7-5
Novak Djokovic (SRB x14) bt Donald Young (USA) 6-1, 6-2, 6-4
Jan-Lennard Struff (GER) bt Kwon Soon-woo (KOR) 6-1, 6-2, 6-4
Denis Kudla (USA) bt Steve Johnson (USA) 6-7 (5/7), 6-3, 7-6 (7/3), 6-2
Tennys Sandgren (USA) bt Jeremy Chardy (FRA) 6-4, 7-6 (7/2), 6-2
Fabio Fognini (ITA x25) bt Horacio Zeballos (ARG) 6-4, 6-4, 7-5
Gael Monfils (FRA) bt Jaume Munar (ESP) 6-3, 7-6 (7/5), 6-4
Tim Smyczek (USA) bt Alexei Popyrin (AUS) 6-3, 6-7 (14/16), 6-3, 6-3
Chung Hyeon (KOR) bt Mischa Zverev (GER x32) 6-2, 4-1 ret
Richard Gasquet (FRA x29) bt Blaz Kavcic (SLO) 6-1, 6-4, 7-5
Daniil Medvedev (RUS) bt Thanasi Kokkinakis (AUS) 6-2, 6-7 (6/8), 7-6 (10/8), 6-4
Guillermo Garcia-Lopez (ESP) bt Benoit Paire (FRA) 6-0, 6-7 (4/7), 6-1, 6-4
Karen Khachanov (RUS) bt Peter Polansky (CAN) 7-6 (7/3), 7-6 (7/2), 6-4
Roger Federer (SUI x2) bt Aljaz Bedene (GBR) 6-3, 6-4, 6-3
Tomas Berdych (CZE x19) bt Alex de Minaur (AUS) 6-3, 3-6, 6-0, 6-1
Dominic Thiem (AUT x5) bt Guido Pella (ARG) 6-4, 6-4, 6-4
Juan Martin Del Potro (ARGx12) bt Frances Tiafoe (USA) 6-3, 6-4, 6-3
Women's singles
1st round
Johanna Konta (GBR x9) bt Madison Brengle (USA) 6-3, 6-1
Bernarda Pera (USA) bt Anna Blinkova (RUS) 6-2, 6-2
Barbora Zahlavova Strycova (CZE x20) bt Kristie Ahn (USA) 6-1, 7-5
Lara Arruabarrena (ESP) bt Richel Hogenkamp (NED) 6-1, 6-2
Lucie Safarova (CZE x29) bt Ajla Tomljanovic (CRO) 7-5, 6-3
Karolina Pliskova (CZE x6) bt Veronica Cepede (PAR) 6-3, 6-4
Angelique Kerber (GER x21) bt Anna-Lena Friedsam (GER) 6-0, 6-4
Marketa Vondrousova (CZE) bt Kurumi Nara (JPN) 7-5, 6-4
Caroline Garcia (FRA x8) bt Carina Witthoeft (GER) 7-5, 6-3
Elena Vesnina (RUS x16) bt Ons Jabeur (TUN) 6-3, 6-4
Maria Sharapova (RUS) bt Tatjana Malek (GER) 6-1, 6-4
Aliaksandra Sasnovich (BLR) bt Christina McHale (USA) 6-3, 6-2
Eugenie Bouchard (CAN) bt Oceane Dodin (FRA) 6-3, 7-6 (7/5)
Sorana Cirstea (ROM) bt Zarina Diyas (KAZ) 5-7, 6-4, 6-3
Beatriz Haddad Maia (BRA) bt Lizette Cabrera (AUS) 7-6 (7/3), 6-4
Donna Vekic (CRO) bt Nao Hibino (JPN) 7-5, 6-3
Madison Keys (USA x17) bt Qiang Wang (CHN) 6-1, 7-5
Simona Halep (ROM x1) bt Destanee Aiava (AUS) 7-6 (7/5), 6-1
Ekaterina Alexandrova (RUS) bt Polona Hercog (SLO) 7-6 (7/2), 6-4
Mirjana Lucic-Baroni (CRO x28) bt Shelby Rogers (USA) 7-6 (8/6), 5-7, 6-2
Anastasija Sevastova (LAT x14) bt Varvara Lepchenko (USA) 3-6, 6-3, 6-2
Naomi Osaka (JPN) bt Kristina Kucova (SVK) 7-5, 6-2
Lesya Tsurenko (UKR) bt Natalia Vikhlyantseva (RUS) 3-6, 6-3, 6-4
Camila Giorgi (ITA) bt Anna Kalinskaya (RUS) 6-4, 6-3
Lauren Davis (USA) bt Jana Cepelova (SVK) 6-7 (4/7), 6-3, 6-1
Andrea Petkovic (GER) bt Petra Kvitova (CZE x27) 6-3, 4-6, 10-8
Hsieh Su-wei (TPE) bt Zhu Lin (CHN) 0-6, 6-0, 8-6
Ana Bogdan (ROM) bt Kristina Mladenovic (FRA x11) 6-3, 6-2
Garbine Muguruza (ESP x3) bt Jessika Ponchet (FRA) 6-4, 6-3
Agnieszka Radwanska (POL x26) bt Kristyna Pliskova (CZE) 2-6, 6-3, 6-2
Yulia Putintseva (KAZ) bt Heather Watson (GBR) 7-5, 7-6 (8/6)
Ashleigh Barty (AUS x18) bt Aryna Sabalenka (BLR) 6-7 (2/7), 6-4, 6-4