| Challenger Ostrava | 04/23 11:25 | 14 | Dominik Kellovsky v Illya Marchenko | 4-6,1-6 | |
| Challenger Roseto | 04/19 10:35 | 25 | [324] Illya Marchenko v Raphael Collignon [249] | 7-6,2-6,2-6 | |
| Challenger Puerto Vallarta | 03/12 02:50 | 28 | [386] Illya Marchenko v Benoit Paire [209] | 4-6,6-4,4-6 | |
| Challenger Puerto Vallarta | 03/11 01:45 | 27 | [386] Illya Marchenko v Gastao Elias [230] | 6-7,6-3,6-0 | |
| Challenger Puerto Vallarta | 03/09 21:00 | 26 | [462] Christian Langmo v Illya Marchenko [386] | 4-6,3-6 | |
| Challenger Puerto Vallarta | 03/08 01:45 | 25 | [386] Illya Marchenko v Guido Andreozzi [311] | 6-3,6-4 | |
| Challenger Puerto Vallarta | 03/06 23:45 | 19 | [364] Alex Rybakov v Illya Marchenko [386] | 6-7,6-7 | |
| Challenger Puerto Vallarta | 03/05 22:05 | 14 | [61] Nicolas Barrientos v Illya Marchenko [388] | 1-6,3-6 | |
| Challenger Waco | 02/27 17:00 | 19 | [299] Shintaro Mochizuki v Illya Marchenko [388] | 6-3,4-6,7-6 | |
| Challenger Waco | 02/26 17:00 | 14 | [375] Illya Marchenko v Daniel Rincon [316] | 7-6,6-4 | |
| Challenger Rome GA | 02/20 21:40 | 25 | Illya Marchenko v Ryan Harrison | 3-6,6-3,3-6 | |
| ITF M25 Santo Domingo | 02/14 14:30 | 25 | Illya Marchenko v Joao Victor C Loureiro | Cancelled | |
| Challenger Cleveland | 02/01 17:40 | 26 | [374] Illya Marchenko v Aleksandar Kovacevic [166] | 5-7,3-6 | |
| Challenger Cleveland | 01/31 16:55 | 25 | Toby Alex Kodat v Illya Marchenko | 5-7,7-5,3-6 | |
| Challenger Quimper | 01/26 12:50 | 26 | [412] Illya Marchenko v Dominic Stricker [118] | 6-2,3-6,3-6 | |
| Challenger Quimper | 01/25 14:05 | 25 | [172] Benoit Paire v Illya Marchenko [412] | 1-6,4-6 | |
| Challenger Quimper | 01/24 09:30 | 19 | [243] Ivan Gakhov v Illya Marchenko [412] | 6-7,6-7 | |
| Challenger Quimper | 01/23 09:00 | 14 | [412] Illya Marchenko v Benjamin Lock [376] | 6-1,7-6 | |
| Challenger Oeiras | 01/09 11:00 | 19 | [414] Illya Marchenko v Mark Lajal [392] | 2-6,5-7 | |
| Challenger Oeiras Qual | 01/08 12:50 | 14 | [324] Alexey Vatutin v Illya Marchenko [412] | 4-6,6-7 | |
| Challenger Andria | 11/22 10:25 | 25 | [334] Alibek Kachmazov v Illya Marchenko [423] | 6-2,6-1 | |
| Challenger Andria | 11/21 09:00 | 19 | [297] Raphael Collignon v Illya Marchenko [423] | 3-6,5-7 | |
| Challenger Andria | 11/20 11:05 | 14 | Giuseppe Tresca v Illya Marchenko | 0-6,3-6 | |
| Challenger Bratislava | 11/10 13:15 | 26 | [446] Illya Marchenko v Cem Ilkel [407] | 6-4,5-7,3-6 | |
| Challenger Bratislava | 11/08 09:00 | 25 | [98] Zhizhen Zhang v Illya Marchenko [446] | 6-7,5-7 | |
| Challenger Bratislava | 11/07 09:30 | 19 | [441] Karl Friberg v Illya Marchenko [446] | 2-6,3-6 | |
| Challenger Bratislava | 11/06 11:05 | 14 | [436] Illya Marchenko v Duje Ajdukovic [335] | 6-2,6-2 | |
| Challenger Bergamo | 10/31 09:00 | 19 | [318] Cem Ilkel v Illya Marchenko [436] | 7-6,6-2 | |
| Challenger Bergamo | 10/30 12:20 | 14 | [435] Illya Marchenko v Mate Valkusz [271] | 6-2,6-3 | |
| Challenger Ortisei | 10/23 11:55 | 14 | [446] David Poljak v Illya Marchenko [377] | 7-6,3-6,7-5 |
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.