Borg, 20, was handed a wildcard entry and beat Swedish compatriot Ymer 7-6 (7-5) 6-3 at the Bastad Tennis Stadium.
Ranked at a lowly 437th, Borg plays mostly on the ITF Tour, the lowest level of the men’s professional game.
“I’ve worked so hard for this, so many years, and some days you get results and today I got a win,” he said.
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Borg’s win on Tuesday set up a clash with Argentina’s Federico Coria, who is the world number 113, in the last-16 stage of the tournament.
There was to be no repeat of the first-round outcome, however, as Borg exited 6-4 6-2 in an hour and 26 minutes against Coria on Wednesday.
According to BBC Sport, Bjorn Borg was one of tennis’ greatest ever stars and won 11 Grand Slam titles – including five back-to-back Wimbledon titles – in the 1970s and early 1980s before he retired aged only 26.
Written by: Debby Eselebor
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