<p>Slovak wild card Mia Pohankova, the 17-year-old who won Wimbledon last year, came from 4-1 down in the second set to upset No. 2 seed Clara Tauson in the first round of the Libéma Open.</p><p>It was the sixth successive defeat for Tauson, who hasn't won a match in three months.</p><p>The Dane, who was the 2nd seed in the tournament, was otherwise up 4-1 in the second set, but was broken twice as she completely lost her rhythm and thus lost 6-4.</p><p>There are still three weeks until the next Grand Slam of the year, Wimbledon.</p>