| Challenger Recanati | 07/03 19:05 | 25 | [385] Illya Marchenko v Sergiy Stakhovsky [136] | 6-7,6-3,5-7 | |
| Challenger Recanati | 07/01 14:35 | 24 | [385] Illya Marchenko v Kaichi Uchida [237] | 2-6,7-6,6-4 | |
| Wimbledon | 06/26 10:00 | 45 | [384] Illya Marchenko v Attila Balazs [207] | 6-2,6-7,3-6 | |
| Wimbledon | 06/24 14:35 | 44 | [384] Illya Marchenko v Marco Trungelliti [165] | 7-6,7-5 | |
| Challenger Columbus | 06/11 18:15 | 24 | [430] Carlos Gomez-Herrera v Illya Marchenko [381] | 6-1,7-6 | |
| Challenger Little Rock | 06/03 19:55 | 24 | Oliver Crawford v Illya Marchenko | 7-5,7-6 | |
| French Open | 05/21 09:40 | 44 | [185] Arthur De Greef v Illya Marchenko [380] | 5-7,6-3,6-2 | |
| Challenger Samarkand | 05/13 08:00 | 24 | [380] Illya Marchenko v Renzo Olivo [332] | 2-6,2-6 | |
| Challenger Shymkent | 05/09 04:30 | 26 | [395] Illya Marchenko v Sanjar Fayziev [266] | 2-6,6-3,4-6 | |
| Challenger Shymkent | 05/07 12:25 | 25 | [244] Uladzimir Ignatik v Illya Marchenko [395] | 6-3,3-6,4-6 | |
| Challenger Shymkent | 05/06 04:00 | 24 | Illya Marchenko v Dostanbek Tashbulatov | 6-2,6-3 | |
| Challenger Taipei | 04/08 11:50 | 24 | [395] Illya Marchenko v Tak Khunn Wang [321] | 6-4,3-6,4-6 | |
| Challenger Andria | 11/23 19:00 | 27 | Filippo Baldi v Illya Marchenko | 6-2,2-6,7-5 | |
| Challenger Andria | 11/22 16:10 | 26 | Illya Marchenko v Lorenzo Sonego | 6-4,6-4 | |
| Challenger Andria | 11/20 13:30 | 25 | Jannik Sinner v Illya Marchenko | 6-4,2-6,4-6 | |
| Challenger Andria | 11/19 10:00 | 54 | Nicolo Turchetti v Illya Marchenko | 0-6,2-6 | |
| Challenger Andria | 11/18 11:50 | 46 | Illya Marchenko v Alen Avidzba | 5-7,6-4,6-4 | |
| Challenger Andria | 11/17 09:00 | 45 | Volodymyr Uzhylovskyi v Illya Marchenko | 4-6,3-6 | |
| Challenger Almaty 2 | 10/04 08:00 | 27 | Illya Marchenko v Mirza Basic | Retired | |
| Challenger Almaty 2 | 10/03 07:25 | 26 | Illya Marchenko v Zdenek Kolar | 3-6,6-4,6-4 | |
| Challenger Almaty 2 | 10/02 04:00 | 25 | Enrique Lopez-Perez v Illya Marchenko | 6-3,3-6,4-6 | |
| Challenger Almaty 2 | 10/01 04:00 | 54 | Illya Marchenko v Artem Dubrivnyy | 7-5,6-4 | |
| Challenger Almaty 2 | 09/30 05:00 | 46 | Sergey Betov v Illya Marchenko | 3-6,4-6 | |
| Challenger Almaty 2 | 09/29 08:00 | 45 | Sharobiddin Abzalov v Illya Marchenko | 2-6,2-6 | |
| Davis Cup | 09/15 12:45 | 27 | Illya Marchenko v Pedro Sousa | Cancelled | |
| Davis Cup | 09/14 09:00 | 27 | [337] Illya Marchenko v Joao Sousa [49] | 6-4,2-6,3-6 | |
| US Open | 08/22 21:35 | 44 | [334] Illya Marchenko v Ivo Karlovic [137] | 3-6,6-7 | |
| Challenger Vancouver | 08/13 23:15 | 25 | [336] Illya Marchenko v Ilya Ivashka [100] | 6-4,3-6,5-7 | |
| Challenger Aptos | 08/07 17:00 | 25 | [175] Jay Clarke v Illya Marchenko [337] | 6-3,2-6,6-3 | |
| ATP Washington Qual | 07/28 15:45 | 45 | [398] Thai-Son Kwiatkowski v Illya Marchenko [327] | 7-6,0-6,7-5 |
Wikipedia - Illya Marchenko
Illya Vasylovych Marchenko (Ukrainian: Ілля Васильович Марченко) (born 8 September 1987) is a Ukrainian professional tennis player. He has a career high in singles of World No. 49 achieved on 26 September 2016 and of No. 268 in doubles achieved on 25 August 2014. On the ATP Tour, Marchenko reached the semifinals of Moscow in 2009, the 2010 St. Petersburg Open and Doha in 2016.
He is noted for his backhand, which he cites as his best shot. His favorite surface is hard courts.