Our #TeamUSATennis @fedcuptennis leader @captain_kathy is always cool and collected on the bench, but the emotions flowed when @cocovandey rounded up a few of the many players who love her for a surprise birthday party. Give Kathy a 🎉 to wish her a very Happy Birthday! 📽: @cocovandey / @matteksands #usta #ustennis #kathyrinaldi #happybirthday #hbd #fedcup #tennis #protennis