Melbourne - British hope Kyle Edmund reached the Australian Open semi-finals a year ago but was sent packing Monday in round one by veteran Tomas Berdych 6-3, 6-0, 7-5.
The 13th seed had no answer to the Czech former world number four who is on the comeback trail having missed the last six months of the 2018 season with a back injury.
Berdych, who reached the semi-finals in Melbourne in 2014 and 2015, admitted he had contemplated retirement last year before returning to the circuit in Doha earlier this month.
But the 33-year-old instead showed glimpses of his old self as he overpowered the British number one, who will drop outside the world's top 20 as a result of the defeat.
"It's not nice losing, of course. It was like a one-sided defeat, as well," said a dejected Edmund.
"Clearly not what I wanted, not a lot of fun. But for me it just shows where I'm at the minute, my level and stuff, and how much and where I have to improve.
"I very much just got to sort of let the defeat settle, kind of get back to work and look at where I'm at the minute with my game, try to get better basically."
Results from Day 1 of the Australian Open on Monday:
Men
Round 1
Mackenzie McDonald (USA) bt Andrey Rublev (RUS) 6-4, 6-4, 2-6, 6-4
Radu Albot (MDA) bt Michael Mmoh (USA) 3-6, 6-3, 6-4, 6-2
Fernando Verdasco (ESP x26) bt Miomir Kecmanovic (SRB) 7-6 (7/5), 6-3, 6-3
John Millman (AUS) bt Federico Del Bonis (ARG) 6-3, 3-6, 7-6 (7/3), 6-2
Yoshihito Nishioka (JPN) bt Tennys Sandgren (USA) 6-4, 7-6 (7/5), 4-6, 6-4
Karen Khachanov (RUS x10) bt Peter Gojowczyk (GER) 3-6, 6-3, 6-4, 6-3
Stefanos Tsitsipas (GRE x14) bt Matteo Berrettini (ITA) 6-7 (3/7), 6-4, 6-3, 7-6 (7/4)
Viktor Troicki (SRB) bt Roberto Carballes (ESP) 6-1, 1-6, 2-6, 6-1, 6-4
Stefano Travaglia (ITA) bt Guido Andreozzi (ARG) 6-7 (3/7), 6-2, 6-3, 6-2
Nikoloz Basilashvili (GEO x19) bt Christopher Eubanks (USA) 6-4, 4-6, 7-6 (8/6), 6-3
Gael Monfils (FRA x30) bt Damir Dzumhur (BIH) 6-0, 6-4, 6-0
Taylor Fritz (USA) bt Cameron Norrie (GBR) 6-3, 7-6 (8/6), 6-2
Daniel Evans (GBR) bt Tatsuma Ito (JPN) 7-5, 6-1, 7-6 (10/8)
Kevin Anderson (RSA x5) bt Adrian Mannarino (FRA) 6-3, 5-7, 6-2, 6-1
Frances Tiafoe (USA) bt Prajnesh Gunneswaran (IND) 7-6 (9/7), 6-3, 6-3
Jordan Thompson (AUS) bt Feliciano Lopez (ESP) 6-1, 7-6 (7/0), 6-3
Andreas Seppi (ITA) bt Steve Johnson (USA x31) 6-4, 4-6, 6-4, 6-3
Grigor Dimitrov (BUL x20) bt Janko Tipsarevic (SRB) 4-6, 6-3, 6-1, 6-4
Pablo Cuevas (URU) bt Dusan Lajovic (SRB) 6-4, 7-5, 6-1
Thomas Fabbiano (ITA) bt Jason Kubler (AUS) 6-4, 7-6 (7/1), 2-6, 6-3
Reilly Opelka (USA) bt John Isner (USA x9) 7-6 (7/4), 7-6 (8/6), 6-7 (4/7), 7-6 (7/5)
Tomas Berdych (CZE) bt Kyle Edmund (GBR x13) 6-3, 6-0, 7-5
Robin Haase (NED) bt Guillermo Garc1a-Lopez (ESP) 7-5, 6-4, 7-5
Denis Kudla (USA) bt Marc Polmans (AUS) 5-7, 1-6, 6-2, 6-3, 6-2
Diego Schwartzman (ARG x18) bt Rudolf Molleker (GER) 6-1, 6-3, 4-6, 6-0
Alex De Minaur (AUS x27) bt Pedro Sousa (POR) 6-4, 7-5, 6-4
Henri Laaksonen (SUI) bt Mirza Basic (BIH) 6-4, 7-6 (7/4), 4-6, 6-3
Matthew Ebden (AUS) bt Jan-Lennard Struff (GER) 1-6, 6-4, 6-3, 6-4
Rafael Nadal (ESP x2) bt James Duckworth 6-4, 6-3, 7-5
Roberto Bautista (ESP x22) bt Andy Murray (SCO) 6-4, 6-4, 6-7 (5/7), 6-7 (4/7), 6-2
Roger Federer (SUI x3) bt Denis Istomin (UZB) 6-3, 6-4, 6-4
Marin Cilic (CRO x6) bt Bernard Tomic (AUS) 6-2, 6-4, 7-6 (7/3)
Women
Round 1
Irina Begu (ROM) bt Andrea Petkovic (GER) 6-7 (3/7), 4-3 retired
Belinda Bencic (SUI) bt Katerina Siniakova (CZE) 6-4, 2-6, 6-3
Yulia Putintseva (KAZ) bt Barbora Zahlavova Strycova (CZE x32) 6-4, 7-6 (7/1)
Lesya Tsurenko (UKR x24) bt Ekaterina Alexandrova (RUS) 6-4, 7-6 (7/4)
Amanda Anisimova (USA) bt Monica Niculescu (ROM) 7-6 (7/3), 6-4
Katie Boulter (GBR) bt Ekaterina Makarova (RUS) 6-0, 4-6, 7-6 (10/6)
Aryna Sabalenka (BLR x11) bt Anna Kalinskaya (RUS) 6-1, 6-4
Ashleigh Barty (AUS x15) bt Luksika Kumkhum (THA) 6-2, 6-2
Wang Yafan (CHN) bt Ellen Perez (AUS) 6-4, 6-0
Astra Sharma (AUS) bt Priscilla Hon (AUS) 7-5, 4-6, 6-1
Maria Sakkari (GRE) bt Jelena Ostapenko (LAT x22) 6-1, 3-6, 6-2
Maria Sharapova (RUS x30) bt Harriet Dart (GBR) 6-0, 6-0
Rebecca Peterson (SWE) bt Sorana Cirstea (ROU) 6-4, 6-1
Johanna Larsson (SWE) bt Vera Lapko (BLR) 7-6 (7/5), 3-0 retired
Caroline Wozniacki (DEN x3) bt Alison Van Uytvanck (BEL) 6-3, 6-4
Sloane Stephens (USA x5) bt Taylor Townsend (USA) 6-4, 6-2
Timea Babos (HUN) bt Ons Jabeur (TUN) 7-6 (7/5), 7-6 (7/3)
Marketa Vondrousova (CZE) bt Evgeniya Rodina (RUS) 6-3, 6-2
Petra Martic (CRO x31) bt Heather Watson (GBR) 6-1, 6-2
Anett Kontaveit (EST x20) bt Sara Sorribes (ESP) 6-3, 6-2
Aliaksandra Sasnovich (BLR) bt Kirsten Flipkens (BEL) 6-1, 6-1
Anastasia Pavlyuchenkova (RUS) bt Monica Puig (PUR) 6-4, 6-3
Kiki Bertens (NED x9) bt Alison Riske (USA) 6-3, 6-3
Danielle Collins (USA) bt Julia Georges (GER x14) 2-6, 7-6 (7/5), 6-4
Sachia Vickery (USA) bt Ysaline Bonaventure (BEL) 2-6, 6-4, 6-4
Zoe Hives (AUS) bt Bethanie Mattek-Sands (USA) 6-1, 6-2
Caroline Garcia (FRA x19) bt Jessika Ponchet (FRA) 6-2, 6-3
Donna Vekic (CRO x29) bt Kristina Mladenovic (FRA) 6-2, 6-4
Kimberly Birrell (AUS) bt Paula Badosa (ESP) 6-4, 6-2
Beatriz Haddad Maia (BRA) bt Bernarda Pera (USA) 6-3, 5-7, 6-4
Angelique Kerber (GER x2) bt Polona Hercog (SLO) 6-2, 6-2
Petra Kvitova (CZE x8) bt Magdalena Rybarikova (SVK) 6-3, 6-2