Semi-finals bound in #USOpen mixed doubles! @christina_mchale & @charrison94 defeat Sestini Hlavackova/Roger-Vasselin 6-3, 6-4. Leave a 🇺🇸 for this doubles duo! 📷: @narnah _ #ustennis #christinamchale #ChristianHarrison #doubles #mixeddoubles #nyc #protennis