| Manerbio challenger | Round | Result | H | A | 
		
			| 26.08. |  | Behar / Lopez - Marti / Zelen | QF | 6-1, 7-66 | 2.26 | 1.56 | 
		
			| 25.08. |  | Marti / Zelen - Carba / Riba | R16 | 6-3, 6-3 | 1.44 | 2.50 | 
		
			| Cordenons challenger | Round | Result | H | A | 
		
			| 23.08. |  | Marti / Zelen - Marca / Sanci | F | 6-4, 5-7, 10-8 | 2.01 | 1.72 | 
		
			| 22.08. |  | Marti / Zelen - Bedna / Skups | SF | 7-64, 5-7, 11-9 | 1.62 | 2.16 | 
		
			| 21.08. |  | Marti / Zelen - Lee H / Motti | QF | 6-2, 6-3 | 1.81 | 1.87 | 
		
			| 20.08. |  | Marti / Zelen - Cipol / Ungur | R16 | 7-62, 7-60 |  |  | 
		
			| Prague 2 challenger | Round | Result | H | A | 
		
			| 14.08. |  | Betov / Elgin - Kowal / Zelen | SF | 6-3, 7-64 | 1.62 | 2.16 | 
		
			| 13.08. |  | Kowal / Zelen - Ramir / Reyes | QF | 7-5, 3-6, 10-6 | 1.65 | 2.11 | 
		
			| 12.08. |  | Kowal / Zelen - Cerma / Junai | R16 | 7-5, 6-3 | 1.83 | 1.83 | 
		
			| Liberec challenger | Round | Result | H | A | 
		
			| 05.08. |  | Albot / Pavla - Kowal / Zelen | R16 | 2-6, 6-2, 10-5 | 1.99 | 1.75 | 
		
			| Futures 2015 | Round | Result | H | A | 
		
			| 01.08. |  | Horan / Zelen - Arvid / Borso | F | 6-4, 1-6, 15-13 | 1.29 | 3.30 | 
		
			| 31.07. |  | Horan / Zelen - Kello / Staub | SF | 3-6, 6-3, 10-6 |  |  | 
		
			| 29.07. |  | Horan / Zelen - Blask / Fabia | QF | 6-3, 6-4 |  |  | 
		
			| 28.07. |  | Horan / Zelen - Simca / Sproc | R16 | 6-3, 6-3 |  |  | 
		
			| Umag | Round | Result | H | A | 
		
			| 22.07. |  | Fyrst / Gonza - Kowal / Zelen | R16 | 63-7, 6-4, 12-10 | 1.44 | 2.59 | 
		
			| Braunschweig challenger | Round | Result | H | A | 
		
			| 08.07. |  | Knowl / Oswal - Kowal / Zelen | R16 | 6-3, 65-7, 11-9 | 1.56 | 2.28 | 
		
			| Poprad challenger | Round | Result | H | A | 
		
			| 17.06. |  | Koval / Mertl - Kowal / Zelen | R16 | 4-6, 6-3, 10-7 | 3.52 | 1.25 | 
		
			| Prague challenger | Round | Result | H | A | 
		
			| 12.06. |  | Kowal / Zelen - Mayti / Reyes | F | 6-2, 7-65 | 1.65 | 2.10 | 
		
			| 11.06. |  | Kowal / Zelen - Bury / Ghedi | SF | 7-5, 6-4 | 1.55 | 2.30 | 
		
			| 10.06. |  | Kowal / Zelen - Marti / Podli | QF | 6-4, 6-4 |  |  | 
		
			| 09.06. |  | Kowal / Zelen - Fucso / Nedov | R16 | 6-3, 6-2 |  |  | 
		
			| Prostejov challenger | Round | Result | H | A | 
		
			| 05.06. |  | Knowl / Oswal - Kowal / Zelen | F | 4-6, 6-3, 11-9 | 1.65 | 2.09 | 
		
			| 04.06. |  | Kowal / Zelen - Monro / Sitak | SF | 4-6, 7-64, 10-7 | 2.23 | 1.58 | 
		
			| 03.06. |  | Kowal / Zelen - Ghem / Souza | QF | 6-1, 7-64 | 1.50 | 2.36 | 
		
			| 01.06. |  | Kowal / Zelen - Karlo / Konec | R16 | 6-2, 7-64 | 1.16 | 4.42 | 
		
			| Vicenza challenger | Round | Result | H | A | 
		
			| 27.05. |  | Andre / Jarry - Kowal / Zelen | R16 | 6-4, 6-3 | 2.25 | 1.57 | 
		
			| Heilbronn challenger | Round | Result | H | A | 
		
			| 17.05. |  | Kowal / Zelen - Meffe / Puetz | F | 6-4, 6-3 | 1.67 | 2.06 | 
		
			| 15.05. |  | Kowal / Zelen - Motti / Novik | SF | 6-1, 6-4 | 1.61 | 2.18 | 
		
			| 13.05. |  | Kowal / Zelen - Zvere / Zvere | QF | 6-3, 5-7, 10-6 | 2.10 | 1.66 | 
		
			| 11.05. |  | Kowal / Zelen - Falle / Lange | R16 | 6-4, 6-4 | 1.37 | 2.82 | 
		
			| Estoril | Round | Result | H | A | 
		
			| 29.04. |  | Elias / Sousa - Kowal / Zelen | R16 | 7-65, 7-67 | 1.74 | 1.97 | 
		
			| Vercelli challenger | Round | Result | H | A | 
		
			| 22.04. |  | Koolh / Midde - Kowal / Zelen | QF | 6-3, 7-5 | 2.09 | 1.66 | 
		
			| 20.04. |  | Kowal / Zelen - Cecch / Rondo | R16 | 6-3, 7-65 | 1.32 | 3.17 | 
		
			| Napoli 4 challenger | Round | Result | H | A | 
		
			| 09.04. |  | Bozol / Kraji - Kowal / Zelen | QF | 65-7, 6-4, 13-11 | 2.09 | 1.64 | 
		
			| 07.04. |  | Kowal / Zelen - Mager / Quinz | R16 | 6-3, 7-5 | 1.27 | 3.43 |