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Porsche Tennis on Twitter: "The qualifying draw for this year's Porsche Tennis Grand Prix is out! Which 4⃣ players will secure a spot in the main draw? #PTGP2018 #porschetennis #draw #qualifying https://t.co/r9DzisHEQS" /
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Petra Kvitova is the new Stuttgart tennis queen - Porsche Tennis Grand Prix - Dr. Ing. h.c. F. Porsche AG
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