| Link | Location |
|---|
| Natalia Rusova | Moscow, Russia |
| Josh Ryan | Fort Collins, Colorado, Stati Uniti |
| Denys Ryzhykh | Haarlem, Paesi Bassi |
| Andrew S | Rockville Centre, New York, Stati Uniti |
| Andrejs Sabasovs | Riga, Lettonia |
| Jon Sagui | Madison, Wisconsin, Stati Uniti |
| Pranay Sahgal | Rockville Centre, New York, Stati Uniti |
| Yuriy Sakharov | Moscow (online), Russia |
| Sławomir Salamon | Kraków, Polonia |
| Amer Saleh | Leicester, Regno Unito |
| Dmitry Samoylov | Moscow online, Russia |
| Gregg Sanderson | Madison, Wisconsin, Stati Uniti |
| Eduard Sandor | Cluj-Napoca, Romania |
| Debopom Sanyal | Rockville Centre, New York, Stati Uniti |
| Kokela saravanan | Rockville Centre, New York, Stati Uniti |
