| Bucharest 9 ITF | Round | Result | H | A | 
		
			| 12.09. |  | Lee G. - Constantin L. | QF | 2-6, 6-0, 6-1 | 1.07 | 6.10 | 
		
			| 11.09. |  | Constantin L. - Sarrazin L. | R16 | 6-2, 6-2 | 2.00 | 1.72 | 
		
			| 10.09. |  | Constantin L. - Ciobanu D. | 1R | 6-1, 2-6, 6-2 | 3.75 | 1.25 | 
		
			| 08.09. |  | Constantin L. - Novac I. | Q-R16 | 7-5, 4-6, 6-4 | 1.10 | 6.50 | 
		
			| 07.09. |  | Constantin L. - Guna I. | Q-2R | 6-2, 6-2 |  |  | 
		
			| Galati 4 ITF | Round | Result | H | A | 
		
			| 03.09. |  | Platon R. - Constantin L. | 1R | 6-0, 6-3 | 1.06 | 6.50 | 
		
			| 01.09. |  | Constantin L. - Toanchina I. | Q-R16 | 6-0, 6-0 | 1.03 | 10.00 | 
		
			| 30.08. |  | Constantin L. - Ciobanu D. | Q-1R | 6-2, 6-1 |  |  | 
		
			| Mamaia ITF | Round | Result | H | A | 
		
			| 25.08. |  | Szatmari A. - Constantin L. | Q-R16 | 6-0, 6-0 | 1.10 | 6.50 | 
		
			| 25.08. |  | Constantin L. - Moroi C. | Q-2R | 6-3, 6-3 | 2.93 | 1.36 | 
		
			| 23.08. |  | Constantin L. - Vasiliev M. | Q-1R | 6-0, 6-2 |  |  | 
		
			| Bucharest 7 ITF | Round | Result | H | A | 
		
			| 18.08. |  | Szatmari A. - Constantin L. | Q-R16 | 6-2, 6-1 | 1.07 | 6.95 | 
		
			| 17.08. |  | Constantin L. - Ghioca M. | Q-2R | 6-3, 6-0 |  |  | 
		
			| 16.08. |  | Constantin L. - Ciufrila R. | Q-1R | 7-5, 6-3 |  |  | 
		
			| Galati 2 ITF | Round | Result | H | A | 
		
			| 13.07. |  | Bacquie A. - Constantin L. | Q-2R | 6-1, 5-7, 6-1 |  |  | 
		
			| 12.07. |  | Constantin L. - Sisu R. | Q-1R | 6-2, 6-0 |  |  | 
		
			| Iasi ITF | Round | Result | H | A | 
		
			| 07.07. |  | Gavrila O. - Constantin L. | Q-R16 | 6-3, 6-1 | 1.61 | 2.20 | 
		
			| 06.07. |  | Constantin L. - Velehorschi T. | Q-2R | 6-1, 6-0 |  |  | 
		
			| 05.07. |  | Constantin L. - Bogatova S. | Q-1R | 6-3, 6-0 |  |  | 
		
			| Bucharest 2 ITF | Round | Result | H | A | 
		
			| 21.06. |  | Kolb N. - Constantin L. | Q-1R | 6-2, 6-0 |  |  | 
		
			| Galati ITF | Round | Result | H | A | 
		
			| 17.06. |  | Hristea C. - Constantin L. | 1R | 6-3, 2-6, 6-2 |  |  | 
		
			| 16.06. |  | Constantin L. - Cozac M. | Q-R16 | 7-5, 6-2 |  |  | 
		
			| 15.06. |  | Constantin L. - Bozhilova K. | Q-2R | 6-2, 6-2 |  |  |