See Photos (1) 2021 PONY Nationals 20280 Cascades Parkway Sterling, VA 20164 Dates: July 17, 2021 - July 21, 2021 Recurrence: Recurring daily Location: Potomack Lakes Sportsplex - Baseball/Softball Fields Visit Website Overview Join us July 17-21 for the PONY Nationals for girls ages 10-18. The tournament will be played at the Potomack Lakes Sportsplex, Philip A. Bolen Memorial Park and Claude Moore Memorial Park. Map