Five Point Friday ✦ For TennisCompanion Club Members ✦ Hi there, Here's your roundup of the five most interesting things I'm enjoying or thinking about this week in tennis. 1.) The Surface Shift Is On Clay season is here, and Houston's River Oaks Country Club is the only place on US soil to experience it. Tommy Paul came in off a strong hard-court swing but hadn't played a main-draw clay match all year. His first-round opponent, 21-year-old qualifier Adolfo Daniel Vallejo, came in 21-5 on the...