Tunisian tennis trailblazer Ons Jabeur qualified on Thursday for the quarter-finals of the Mubadala Silicon Valley Classic American Championships. Jabeur defeated US player Madison Keys 7-5, 6-1 at the week-long tennis event – which organisers say is the longest-running women-only professional tournament – in San Jose, California. Jabeur is due to play in the championships’ quarter-final tomorrow, with her opponent yet to be decided. Another quarterfinal in her future 🔮 🇹🇳 @Ons_Jabeur speeds past Keys 7-5, 6-1 to her 10th quarterfinal appearance this year!#MubadalaSVC pic.twitter.com/Sdw7m93Mt…