Seventh seed Karolina Pliskova brushed aside fellow Czech Karolina Muchova 6-3, 6-2 to reach the Australian Open second round on Tuesday.
The 26-year-old made short work of her compatriot, dispatching her in 69 minutes.
"It's a good start, I'm happy I didn't have to spend too much time on court," she said.
"I don't know why but I always play good tennis here (in Australia)."
Pliskova has made the quarter-finals in her last two appearances at Melbourne Park and entered this year's tournament on a high after winning the Brisbane International warm-up.
She has been a regular in the second week of Grand Slams in recent years, reaching the quarters or better six times since late 2016, but is still searching for a breakthrough win.
Eugenie Bouchard (CAN) bt Peng Shuai (CHN) 6-2, 6-1
Serena Williams (USA x16) bt Tatjana Maria (GER) 6-0, 6-2
Timea Bacsinszky (SUI) bt Darya Kasatkina (RUS x10) 6-3, 6-0
Johanna Konta (GBR) bt Ajla Tomljanovic (AUS) 7-6 (7/4), 2-6, 7-6 (10/7)
Garbine Muguruza (ESP x18) bt Zheng Saisai (CHN) 6-2, 6-3
Madison Brengle (USA) bt Misaki Doi (JPN) 6-4, 6-0
Karolina Pliskova (CZE x7) bt Karolina Muchova (CZE) 6-3, 6-2
Wang Qiang (CHN x21) bt Fiona Ferro (FRA) 6-4, 6-3
Aleksandra Krunic (SRB) bt Zarina Diyas (KAZ) 3-6, 7-5, 6-1
Anastasija Sevastova (LAT x13) bt Mona Barthel (GER) 6-3, 6-1
Elise Mertens (BEL x12) bt Anna Karolina Schmiedlova (SVK) 6-2, 7-5
Anastasia Potapova (RUS) bt Pauline Parmentier (FRA) 6-4, 7-6 (7/5)
Madison Keys (USA x17) bt Destanee Aiava (AUS) 6-2, 6-2