Britain's Cameron Norrie battled his way to victory over seventh seed Andrey Rublev to progress to the second round of the Erste Bank Open.
World number 35 Norrie won the two-hour match 6-2 6-7 (5-7) 6-2 in Austria.
Norrie, 30, started the match in fine fashion and took the opening set in just 34 minutes before breaking serve to move 2-0 up in the second.
The Briton served for the match at 5-4, but Rublev landed his first break of serve to force a tie-break, which he won to set up a deciding set.