| Challenger Shymkent | 05/11 04:00 | 26 | [329] Ergi Kirkin v Illya Marchenko [254] | 5-7,6-1,6-3 | |
| Challenger Shymkent | 05/09 08:05 | 25 | [381] Gabriel Decamps v Illya Marchenko [254] | 3-6,1-6 | |
| Challenger Praha | 05/02 11:00 | 25 | [206] Dimitar Kuzmanov v Illya Marchenko [251] | 6-1,6-3 | |
| Challenger St Brieuc | 03/30 11:20 | 25 | [252] Illya Marchenko v Jack Draper [146] | 3-6,6-7 | |
| Challenger Lille | 03/23 09:30 | 25 | [263] Robin Haase v Illya Marchenko [252] | 7-6,6-7,6-2 | |
| ATP Indian Wells | 03/09 19:00 | 19 | [214] Illya Marchenko v Tomas Machac [158] | 7-5,3-6,3-6 | |
| ATP Indian Wells | 03/08 22:30 | 14 | [92] Marco Cecchinato v Illya Marchenko [214] | 1-6,2-6 | |
| Davis Cup | 03/05 09:15 | 45 | Illya Marchenko v Darian King | Cancelled | |
| Davis Cup | 03/04 09:35 | 45 | Illya Marchenko v Matthew Foster-Estwick | 6-3,6-1 | |
| Challenger Forli | 02/23 10:35 | 26 | [274] Alexander Ritschard v Illya Marchenko [222] | 6-3,7-5 | |
| Challenger Forli | 02/21 15:00 | 25 | [196] Yasutaka Uchiyama v Illya Marchenko [222] | 2-6,7-6,4-6 | |
| ATP Doha | 02/13 12:30 | 19 | [160] Illya Marchenko v Jozef Kovalik [170] | 1-6,6-7 | |
| ATP Doha | 02/12 10:00 | 14 | [160] Illya Marchenko v Maxime Janvier [251] | 6-4,7-6 | |
| Australian Open | 01/10 06:00 | 14 | [163] Illya Marchenko v Yosuke Watanuki [266] | 4-6,6-4,1-6 | |
| Davis Cup | 11/27 14:35 | 4 | Casper Ruud v Illya Marchenko | Cancelled | |
| Davis Cup | 11/26 17:00 | 1 | [340] Viktor Durasovic v Illya Marchenko [163] | 6-3,6-0 | |
| Challenger Bratislava | 11/08 13:00 | 25 | [155] Illya Marchenko v Liam Broady [127] | 2-6,1-6 | |
| Challenger Bergamo | 11/03 12:40 | 26 | [121] Liam Broady v Illya Marchenko [154] | 6-4,4-6,6-3 | |
| Challenger Bergamo | 11/01 17:50 | 25 | [154] Illya Marchenko v Luca Nardi [437] | 7-6,6-4 | |
| ATP Moskva | 10/20 13:25 | 26 | [164] Illya Marchenko v John Millman [58] | 1-6,7-5,4-6 | |
| ATP Moskva | 10/19 10:50 | 25 | [35] Alexander Bublik v Illya Marchenko [164] | 4-6,3-6 | |
| ATP Moskva | 10/17 09:00 | 19 | [167] Illya Marchenko v Jurij Rodionov [142] | 6-4,6-1 | |
| ATP Moskva | 10/16 07:00 | 14 | [113] Radu Albot v Illya Marchenko [167] | 6-7,3-6 | |
| ATP Sofia | 09/30 09:00 | 26 | [55] John Millman v Illya Marchenko [151] | 5-7,7-6,6-3 | |
| ATP Sofia | 09/29 09:00 | 25 | [95] Andreas Seppi v Illya Marchenko [151] | 4-6,2-6 | |
| ATP Sofia | 09/27 11:05 | 19 | [151] Illya Marchenko v Tomas Machac [138] | 3-6,6-3,7-6 | |
| ATP Sofia | 09/26 14:30 | 14 | [83] Marco Cecchinato v Illya Marchenko [152] | 3-6,3-6 | |
| ATP Nur-Sultan | 09/19 08:40 | 14 | [402] Denis Yevseyev v Illya Marchenko [155] | 6-4,6-4 | |
| Challenger Istanbul | 09/16 08:00 | 26 | [171] Quentin Halys v Illya Marchenko [155] | 3-6,6-2,6-2 | |
| Challenger Istanbul | 09/14 09:35 | 25 | [227] Thomas Fabbiano v Illya Marchenko [155] | 5-7,2-6 |
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.