Neil Robertson survived a spirited fightback from Paul Hunter to win 10-5 and book a tie with Stephen Lee in the last 16 of the World Championship.
Robertson found it tough against Hunter
The Australian, 24, took a 7-2 lead into the final session, but found it difficult to sew up the win.
Hunter, who is battling cancer, fell behind 8-2 before taking advantage of his opponent's nerves to make it 8-4.
The pair shared the next two, before Robertson steadied himself in a tense 15th frame to win the match.
Earlier, Hunter, 27, who has been battling cancer for the past year, shared the first four frames with the Australian, making a break of 64 in the third.
But after the mid-session interval Robertson won the next five frames making breaks of 83 and 85.
P Hunter (Eng) 5-10 N Robertson (Aus)
100-27 34-95 (70) 64-6 (64) 13-73 7-119 (83) 6-68 62-66 42-70 35-90 (85) 39-60 64-16 65-9 40-70 61-8 22-64