| Challenger - Mauthausen | 05/07 09:45 | 14 | Illya Marchenko v Joel Josef Schwarzler | 7-5,6-2 | |
| Challenger - Ostrava | 04/24 10:30 | 19 | [317] Henri Squire v Illya Marchenko [324] | 6-4,6-2 | |
| 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 - Calificari | 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 |
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.