FRISCO, Texas—Reilly Opelka and Tommy Paul grew up training together, roomed together in junior dorms, even shared a house together as established pros. Oddly, despite playing more than 500 combined ...

There is no doubt about who the most popular American women's tennis player is. Coco Gauff currently owns that distinction.

Tommy Paul (No. 9 in the world) meets Reilly Opelka (No. 145) in the quarterfinals at the Dallas Open.Paul earned a three-set ...