| Challenger Ismaning | 10/14 12:45 | 24 | Illya Marchenko v Tomas Machac | Cancelled | |
| Challenger Nur-Sultan 2 | 10/06 06:00 | 29 | [130] Yannick Maden v Illya Marchenko [378] | 6-4,4-6,3-6 | |
| Challenger Nur-Sultan 2 | 10/05 06:00 | 28 | [378] Illya Marchenko v Ruben Bemelmans [225] | 1-6,7-6,6-4 | |
| Challenger Nur-Sultan 2 | 10/04 06:35 | 27 | [378] Illya Marchenko v Konstantin Kravchuk [340] | 6-4,6-3 | |
| Challenger Nur-Sultan 2 | 10/03 06:50 | 26 | [311] Teymuraz Gabashvili v Illya Marchenko [378] | 4-6,2-6 | |
| Challenger Nur-Sultan 2 | 10/02 08:40 | 25 | [378] Illya Marchenko v Matteo Viola [212] | 6-4,6-3 | |
| Challenger Nur-Sultan 2 | 09/30 07:40 | 24 | Illya Marchenko v Maximilian Neuchrist | 6-4,7-5 | |
| Challenger Glasgow | 09/17 09:00 | 24 | Illya Marchenko v Harry Wendelken | Cancelled | |
| Davis Cup | 09/15 15:10 | - | [136] Attila Balazs v Illya Marchenko [371] | 6-4,7-5 | |
| Davis Cup | 09/14 10:55 | - | [65] Marton Fucsovics v Illya Marchenko [371] | 6-3,6-2 | |
| Challenger Cassis | 09/05 09:00 | 26 | [430] Illya Marchenko v Dudi Sela [166] | Retired | |
| Challenger Cassis | 09/04 08:00 | 25 | [144] Ilya Ivashka v Illya Marchenko [430] | 6-7,4-6 | |
| Challenger Cassis | 09/02 08:30 | 24 | [377] Lloyd Glasspool v Illya Marchenko [430] | 4-6,4-6 | |
| Challenger Mallorca | 08/30 12:45 | 27 | [430] Illya Marchenko v Daniel Masur [318] | 6-7,2-6 | |
| Challenger Mallorca | 08/29 13:05 | 26 | [230] Roman Safiullin v Illya Marchenko [430] | 1-6,2-6 | |
| Challenger Mallorca | 08/28 16:05 | 25 | [430] Illya Marchenko v Dudi Sela [166] | 6-4,6-2 | |
| Challenger Mallorca | 08/26 10:55 | 24 | [387] Felipe M R Alves v Illya Marchenko [430] | 3-6,4-6 | |
| Challenger Portoroz | 08/14 16:40 | 25 | [90] Aljaz Bedene v Illya Marchenko [460] | 5-7,6-4,6-2 | |
| Challenger Portoroz | 08/12 18:55 | 24 | [412] Hugo Nys v Illya Marchenko [460] | 4-6,2-6 | |
| ITF M25 Pozoblanco | 08/10 19:15 | 28 | Rayane Roumane v Illya Marchenko | 7-6,6-2 | |
| ITF M25 Pozoblanco | 08/09 18:25 | 27 | Gabriel Petit v Illya Marchenko | 4-6,6-7 | |
| ITF M25 Pozoblanco | 08/08 16:00 | 26 | Anatoliy Petrenko v Illya Marchenko | 5-7,0-6 | |
| ITF M25 Pozoblanco | 08/07 18:45 | 25 | David Jorda Sanchis v Illya Marchenko | 2-6,5-7 | |
| Challenger Segovia | 08/01 17:55 | 26 | [238] Nicola Kuhn v Illya Marchenko [359] | 7-6,6-1 | |
| Challenger Segovia | 07/30 12:05 | 25 | [359] Illya Marchenko v Scott Griekspoor [331] | 7-6,6-4 | |
| Challenger Segovia | 07/29 10:30 | 24 | Miguel Damas v Illya Marchenko | 7-6,6-7,2-6 | |
| Challenger Nur-Sultan | 07/16 09:35 | 25 | [363] Illya Marchenko v Sebastian Ofner [138] | 3-6,6-3,3-6 | |
| Challenger Nur-Sultan | 07/15 09:00 | 24 | Illya Marchenko v Marsel Ilhan | 7-6,7-6 | |
| 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 |
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.