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MELBOURNE, Australia — Sofia Kenin’s breakthrough run at Grand Slam tournament has continued to the semifinals at the Australian Open. The 21-year-old Kenin beat No. 78-ranked Ons Jabeur 6-4, 6-4 in the first match Tuesday on Rod Laver Arena. Both were playing in the quarterfinals at a major for the first time. Jabeur, a 25-year-old...