Medvedev hit 21 winners, including nine aces, almost double his opponent\u2019s. He won 91 per cent of first-serve points and never faced a break point.<\/p>\r\n\r\n
\u201cThe court is pretty fast, so you need to serve well and I\u2019m happy with how I served. I feel like it was better than the first round. From the first point it puts a lot of pressure on your opponent, got a couple of good games on his serve. It was enough today, that\u2019s how tennis is sometimes,\" Medvedev said.<\/p>\r\n\r\n
Meanwhile, reigning champion Jiri Lehecka had to retire due to a right ankle injury while trailing 3-6, 2-1 against American Sebastian Korda.<\/p>\r\n\r\n
Lehecka\u2019s injury retirement pitted Korda against Alex Michelsen in the quarterfinals, who had earlier beaten eighth seed Learner Tien, to set up an all-American clash.<\/p>\r\n\r\n
Elsewhere, fourth seed Jessica Pegula got her season underway with a victory, defeating Anna Kalinskaya 6-2, 2-6, 6-4 to reach the third round in Brisbane.<\/p>\r\n\r\n
Pegula improved the head-to-head to 4-1 after twice rebounding from a break down in the deciding set.<\/p>\r\n\r\n
Elsewhere, fourth seed Jessica Pegula got her season underway with a victory, defeating Anna Kalinskaya 6-2, 2-6, 6-4 to reach the third round in Brisbane.<\/p>\r\n\r\n
\u201cI knew it was going to be tough, she\u2019s such a great player. She can really take the racquet out of your hand, change the direction of the ball so well, so I kind of figured out just in time and competed really well, maybe got a little lucky here and there too,\" she added.<\/p>\r\n\r\n