|   AO Wildcard Playoff - USA | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 16.12. | 
			  | 
			Levine J. - Kosakowski D. | 
			QF | 
			6-2, 6-4 | 
			  | 
			  | 
		
		
			|   Charlottesville challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 29.10. | 
			  | 
			Ouellette G. - Kosakowski D. | 
			Q-1R | 
			6-3, 7-6 | 
			  | 
			  | 
		
		
			|   Futures 2011 | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 18.10. | 
			  | 
			Williams R. - Kosakowski D. | 
			1R | 
			6-2, 2-6, 6-4 | 
			  | 
			  | 
		
		
			|   Tiburon challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 11.10. | 
			  | 
			Farah R. - Kosakowski D. | 
			1R | 
			6-4, 4-6, 7-64 | 
			1.53 | 
			2.30 | 
		
		
			|   Sacramento challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 01.10. | 
			  | 
			Strode B. - Kosakowski D. | 
			Q-1R | 
			6-4, 6-7, 7-5 | 
			  | 
			  | 
		
		
			|   Tulsa challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 16.09. | 
			  | 
			McClune M. - Kosakowski D. | 
			QF | 
			7-66, 6-4 | 
			2.36 | 
			1.52 | 
		
		
			| 14.09. | 
			  | 
			Kosakowski D. - Kim K. | 
			R16 | 
			6-3, 4-6, 6-4 | 
			1.73 | 
			2.02 | 
		
		
			| 12.09. | 
			  | 
			Kosakowski D. - Sitak A. | 
			1R | 
			6-2, 6-1 | 
			1.46 | 
			2.55 | 
		
		
			|   US Open | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 24.08. | 
			  | 
			Brezac C. - Kosakowski D. | 
			Q-1R | 
			6-2, 7-5 | 
			1.94 | 
			1.79 | 
		
		
			|   Vancouver challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 01.08. | 
			  | 
			Wolmarans F. - Kosakowski D. | 
			1R | 
			66-7, 6-4, 6-4 | 
			2.03 | 
			1.70 | 
		
		
			|   Los Angeles | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 27.07. | 
			  | 
			Gulbis E. - Kosakowski D. | 
			R16 | 
			6-2, 6-4 | 
			1.21 | 
			4.28 | 
		
		
			| 26.07. | 
			  | 
			Kosakowski D. - Smyczek T. | 
			1R | 
			2-6, 6-1, 6-3 | 
			2.61 | 
			1.46 | 
		
		
			| 25.07. | 
			  | 
			Kosakowski D. - Kudla D. | 
			Q-QF | 
			6-4, 7-64 | 
			2.67 | 
			1.39 | 
		
		
			| 24.07. | 
			  | 
			Kosakowski D. - Ito T. | 
			Q-R16 | 
			6-0, 6-2 | 
			6.00 | 
			1.11 | 
		
		
			| 23.07. | 
			  | 
			Kosakowski D. - Lejnieks K. | 
			Q-1R | 
			6-1, 6-2 | 
			  | 
			  | 
		
		
			|   Atlanta | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 17.07. | 
			  | 
			Ebden M. - Kosakowski D. | 
			Q-R16 | 
			6-1, 6-2 | 
			1.10 | 
			5.75 | 
		
		
			| 16.07. | 
			  | 
			Kosakowski D. - Lejnieks K. | 
			Q-1R | 
			6-3, 7-5 | 
			  | 
			  | 
		
		
			|   Aptos challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 09.07. | 
			  | 
			Siwy R. - Kosakowski D. | 
			Q-1R | 
			6-4, 4-6, 6-4 | 
			  | 
			  | 
		
		
			|   Futures 2011 | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 01.07. | 
			  | 
			Williams R. - Kosakowski D. | 
			SF | 
			7-6, 6-1 | 
			  | 
			  | 
		
		
			| 30.06. | 
			  | 
			Kosakowski D. - Poole R. | 
			QF | 
			6-1, 6-3 | 
			  | 
			  | 
		
		
			| 29.06. | 
			  | 
			Kosakowski D. - Lewis H. | 
			R16 | 
			64-7, 7-65, 6-4 | 
			  | 
			  | 
		
		
			| 28.06. | 
			  | 
			Kosakowski D. - Sarmiento R. | 
			1R | 
			6-3, 6-2 | 
			  | 
			  | 
		
		
			| 18.06. | 
			  | 
			Strode B. - Kosakowski D. | 
			SF | 
			3-6, 6-3, 7-5 | 
			  | 
			  | 
		
		
			| 16.06. | 
			  | 
			Kosakowski D. - Ouellette G. | 
			QF | 
			6-3, 6-2 | 
			  | 
			  | 
		
		
			| 15.06. | 
			  | 
			Kosakowski D. - Wang J. | 
			R16 | 
			3-6, 7-5, 6-2 | 
			  | 
			  | 
		
		
			| 14.06. | 
			  | 
			Kosakowski D. - Kpulun S. | 
			1R | 
			6-1, 7-65 | 
			  | 
			  | 
		
		
			| 12.06. | 
			  | 
			Kosakowski D. - Johnson S. | 
			F | 
			6-4, 2-6, 6-3 | 
			  | 
			  | 
		
		
			| 10.06. | 
			  | 
			Kosakowski D. - Benneteau A. | 
			SF | 
			6-3, 6-4 | 
			  | 
			  | 
		
		
			| 09.06. | 
			  | 
			Kosakowski D. - Yani M. | 
			QF | 
			7-6, 4-1 | 
			  | 
			  | 
		
		
			| 08.06. | 
			  | 
			Kosakowski D. - Siwy R. | 
			R16 | 
			6-2, 6-4 | 
			  | 
			  | 
		
		
			| 07.06. | 
			  | 
			Kosakowski D. - Frank M. | 
			1R | 
			6-3, 6-1 | 
			  | 
			  | 
		
		
			| 05.05. | 
			  | 
			Garza D. - Kosakowski D. | 
			QF | 
			6-3, 6-1 | 
			  | 
			  | 
		
		
			| 04.05. | 
			  | 
			Kosakowski D. - Ouellette G. | 
			R16 | 
			6-4, 6-3 | 
			  | 
			  | 
		
		
			| 03.05. | 
			  | 
			Kosakowski D. - Sharifi D. | 
			1R | 
			6-2, 6-0 | 
			  | 
			  | 
		
		
			| 28.04. | 
			  | 
			Brink J. - Kosakowski D. | 
			QF | 
			7-5, 0-6, 7-68 | 
			  | 
			  | 
		
		
			| 27.04. | 
			  | 
			Kosakowski D. - Sitak A. | 
			R16 | 
			6-3, 6-0 | 
			  | 
			  | 
		
		
			| 26.04. | 
			  | 
			Kosakowski D. - Kwon C. | 
			1R | 
			6-3, 6-4 | 
			  | 
			  | 
		
		
			|   Indian Wells | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 08.03. | 
			  | 
			Smyczek T. - Kosakowski D. | 
			Q-1R | 
			6-3, 6-2 | 
			1.19 | 
			4.31 | 
		
		
			|   Futures 2011 | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 10.01. | 
			  | 
			Collarini A. - Kosakowski D. | 
			Q-R16 | 
			6-4, 6-2 | 
			  | 
			  | 
		
		
			| 09.01. | 
			  | 
			Kosakowski D. - Bouras M. | 
			Q-3R | 
			7-69, 6-2 | 
			  | 
			  | 
		
		
			| 08.01. | 
			  | 
			Kosakowski D. - Rodeiro-Stetson R. | 
			Q-2R | 
			6-1, 6-1 | 
			  | 
			  | 
		
		
			| 07.01. | 
			  | 
			Kosakowski D. - Hewitt A. | 
			Q-1R | 
			4-6, 6-2, 7-5 | 
			  | 
			  |