Swiss Indoors Basel - Wikipedia, den frie encyklopædi
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ATP da Basileia – Wikipédia, a enciclopédia livre
Tennis - ATP 500 - Basel Open - St. Jakobshalle, Basel, Switzerland - October 28, 2018 Switzerland's Roger Federer in action during the singles final against Romania's Marius Copil REUTERS/Arnd Wiegmann Stock Photo - Alamy
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