| UTR Pro Tennis Series Florida | 2021/08/18 14:30 | 반 엠부르그, 제이크 v 야츠크, 이반 | 4-6,6-4,7-5 |
| UTR Pro Tennis Series Florida | 2021/08/17 16:00 | Kyle Frankel v 야츠크, 이반 | 6-1,1-3 |
| UTR Pro Tennis Series Atlanta | 2021/07/16 15:29 | 야츠크, 이반 v 판타 헤레로스, 조르지 브리안 | 4-6,2-6 |
| UTR Pro Tennis Series Atlanta | 2021/07/16 12:00 | 야츠크, 이반 v 빌라누에바, 곤잘로 | 6-1,6-4 |
| UTR Pro Tennis Series Atlanta | 2021/07/15 15:00 | 야츠크, 이반 v Shubladze, Vazha | 4-6,7-6,6-0 |
| UTR Pro Tennis Series Atlanta | 2021/07/11 20:45 | 야츠크, 이반 v William Mroz Mroz | 3-6,7-6,4-5 |
| UTR Pro Tennis Series Florida | 2021/06/12 13:30 | Mccormick, Tristan v 야츠크, 이반 | 4-6,6-4,7-6 |
| UTR Pro Tennis Series Florida | 2021/06/11 16:00 | 하프, 클리브 v 야츠크, 이반 | 7-5,6-7,4-6 |
| UTR Pro Tennis Series Florida | 2021/08/16 14:30 | Buse, Ignacio v Mateo Barreiros Reyes | 3-6,6-7 |