Fifth seed Andrey Rublev saved two match points and recovered from 5-0 down in a final-set tie-break to beat Holger Rune and reach the quarter-finals of the Australian Open.
Danish ninth seed Rune served for the match at 5-3 in the final set and then had two match points on Rublev's serve when 6-5 up.
The Russian ultimately got over the line with a fortunate net-cord winner.
"I was 5-2 down in the fifth set, 6-5 two match points and then 5-0 in a super tie-break. This is the first ever time I win a match like this," Rublev said after his win.