| Name | Steam ID | Records | WRs |
|---|---|---|---|
| ufoboss | 76561198257422662 | 1 | 0 |
| UFOVoodoO | 76561197961314683 | 1 | 0 |
| UglyGames | 76561198129183282 | 2 | 0 |
| Uglymofo | 76561198370812539 | 11 | 0 |
| Ugokiwana | 76561198313694397 | 11 | 0 |
| UGotSlade | 76561198076528547 | 2 | 0 |
| [UGO]Zooraw | 76561198206194332 | 1 | 0 |
| U HEZ DIRTY POOPER | 76561198109644371 | 2 | 0 |
| Uhhyaa | 76561197992788427 | 4 | 0 |
| Uhorečka | 76561198070745933 | 1 | 0 |
| uhurtv | 76561199163336834 | 1 | 0 |
| uhuru | 76561198113589016 | 3786 | 0 |
| ui^^ | 76561198867711015 | 7 | 0 |
| uiuiui | 76561198079304337 | 2 | 0 |
| Ujass Eyjafjallajoekull | 76561197969212524 | 1 | 0 |
| [UK]$h | 76561198006676310 | 7 | 0 |
| [UK]atkosas | 76561198257369569 | 2 | 0 |
| [UK] dr4g0nizd | 76561198195105450 | 239 | 0 |
| [UK]ggjkhg | 76561198371241517 | 8 | 0 |
| UkI | 76561199096776303 | 1 | 0 |
| UkiOsu | 76561198100655128 | 2 | 0 |
| _Ukkri6 | 76561198281846341 | 1 | 0 |
| ukminvinc | 76561199028428638 | 1 | 0 |
| [UK]misterph | 76561197988995240 | 1 | 0 |
| Ukropchick | 76561198186514721 | 20 | 0 |
| [UK]RunUm_GunUm | 76561198302321632 | 43 | 0 |
| [UK]Siberianlion | 76561198257357136 | 1 | 0 |
| [UK]wygaz | 76561198162036231 | 3 | 0 |
| ulbens | 76561198934685089 | 1 | 0 |
| Ulick | 76561198098854719 | 4 | 0 |
| uLmi | 76561197961771823 | 1 | 0 |
| ulosen | 76561198273670912 | 3 | 0 |
| ulrich | 76561198022293079 | 4 | 0 |
| =ULT1M@TE= | 76561198415889627 | 1 | 0 |
| ulti | 76561198050926014 | 2 | 0 |
| ultiman | 76561198057041970 | 2 | 0 |
| Ultimate Alpha | 76561198026879066 | 2 | 0 |
| Ultimate_Cubchoo | 76561198868588032 | 1 | 0 |
| ultimateNOOB | 76561198317228679 | 2 | 0 |
| Ultimate_Sacrifice | 76561197984302007 | 1 | 0 |
| ultimateSub0 | 76561198862729530 | 1 | 0 |
| ULTIMO | 76561198039771525 | 10 | 0 |
| ult!ma.de | 76561198061265911 | 1 | 0 |
| .ultor | 76561198110673377 | 40 | 0 |
| ULTRA | 76561198257366239 | 29 | 0 |
| UltraBallz | 76561198165190835 | 1 | 0 |
| ULTRABOOCE*69* | 76561198018559884 | 2 | 0 |
| ultracompost | 76561198339018963 | 7 | 0 |
| Ultram | 76561198076661752 | 1 | 0 |
| Ultra_Sk | 76561198263414546 | 19 | 0 |