Australian Open Tennis : Thiem, Zverev, Halep Get Past Opening Round
Dominic Thiem overcame an early wobble before overpowering Mikhail Kukushkin 7-6 6-2 6-3 to reach the second round.
Third seed Thiem was broken twice in the first set and had to fight off a set point at 6-5 before rallying to take the tiebreak at rod laver arena.
Sixth seed Alexander Zverev overcame an inconsistent Start to battle past unheralded American Marcos Giron 6-7, 7-6, 6-3, 6-2.
After losing a first-set tiebreak, Zverev went up an early break in the second and was serving for the set at 5-3 when Giron broke him, prompting the German player to smash his racket in frustration and pick up a code violation in the process.
Bulgarian Grigor Dimitrov beat Croat Marin Cilic in straight sets while Emil Ruusuvuori dealt Gael Monfils a shock defeat after a five set match.
Kei Nishikori, the Former world number four, a four-time quarter-finalist at melbourne park, bowed out 7-5, 7-6, 6-2 to Spanish 15th seed Pablo Carreno Busta.