Former world number one Victoria Azarenka moved into the third round of the Brisbane International on Tuesday, but Sofia Kenin was bundled out by Australian wildcard Arina Rodionova.
The 34-year-old Belarusian came back from second set jitters to see off Russia’s Anna Kalinskaya 6-1, 7-6 (10/8). Azarenka had been in complete control early, racing to a 5-0 lead before wrapping up the first set.
A two-time winner of the Australian Open, she then got an early break in the second set and appeared to be cruising. But Kalinskaya began to find her range as Azarenka faltered, failing to hold while serving for the match at 5-4 and 6-5.
The tiebreak was just as dramatic, with Azarenka having five match points before getting over the line.
Kenin, also a former Australian Open winner, was stunned by Rodionova, who had a successful year on the lower-level ITF Circuit, winning seven titles and taking her ranking to a career-high 113. She has brought the form into the season-opening tournament, beating opening round opponent Martina Trevisan before outlasting a rusty Kenin, who made 52 unforced errors in the 7-5, 7-6 (9/7) defeat.
Rodionova said playing in front of a big crowd on Pat Rafter Arena was reward for the hard work put in on the ITF Circuit.
Belarus's Victoria Azarenka hits a return against Russia's Anna Kalinskaya during their match at the Brisbane International in Brisbane on Tuesday. (AFP)