Melbourne: Japan's Kei Nishikori duelled with Marinko Matosevic over five gruelling sets in baking heat before advancing at the Australian Open on Tuesday. The 16th seed was on court for three hours 41 minutes before subduing the Australian 6-3, 5-7, 6-2, 4-6, 6-2 to reach the second round. (Click here for latest on Australian Open)
With new coach Michael Chang watching in the stands, Nishikori finished the better in the 40 Celsius (104 Fahrenheit) heat to fight off the 54th-ranked Matosevic.
Nishikori, who beat Tomas Berdych in the final of the exhibition Kooyong Classic in Melbourne last weekend, will play Serbian qualifier Dusan Lajovic in the next round.