After their @daviscuptennis victory last weekend, our #TeamUSATennis boarded a direct flight to the red clay season. Leave a 🇺🇸 to wish @johnisner, @samquerrey, @ryan.harrison92, @jack.sock and defending champion @steviej345 good luck as they compete this week in Houston! _ #usta #ustennis #houston #atp #jacksock #johnisner #stevejohnson #samquerrey #ryanharrison #tennis #protennis