Germany: Wetzlar - Singles - Main |
| 1/16-finals | Klein M. | Plotniy A. | 0:2 (2:6, 5:7) | dettagli | 30.07.2013 |
Austria: Seefeld - Singles - Main |
| 1/16-finals | Klein M. | Hizak M. | 0:2 (4:6, 4:6) | dettagli | 02.07.2013 |
Slovenia: Litija - Singles - Main |
| 1/16-finals | Klein M. | Lokoli L. | 0:2 (3:6, 4:6) | dettagli | 11.06.2013 |
El Salvador: Santa Tecla - Singles - Main |
| Quarter-finals | Klein M. | Salamanca C. | 0:2 (4:6, 2:6) | dettagli | 16.05.2013 |
| 1/8-finals | Klein M. | Surreaux A. | 2:0 (6:1, 6:2) | dettagli | 15.05.2013 |
| 1/16-finals | Klein M. | Gil Samayoa C. | 2:0 (6:0, 6:0) | dettagli | 13.05.2013 |
Guatemala: Guatemala City - Singles - Main |
| Quarter-finals | Barrientos N. | Klein M. | 2:1 (6:3, 4:6, 6:3) | dettagli | 09.05.2013 |
| 1/8-finals | Tellez P. | Klein M. | 0:2 (1:6, 2:6) | dettagli | 08.05.2013 |
| 1/16-finals | Descotte M. F. | Klein M. | 0:2 (1:6, 4:6) | dettagli | 06.05.2013 |
USA: Little Rock - Singles - Main |
| 1/8-finals | Nevolo D. | Klein M. | 2:0 (6:2, 7:6) | dettagli | 19.04.2013 |
| 1/16-finals | Klein M. | Buchanan C. | 2:1 (4:6, 6:4, 6:2) | dettagli | 17.04.2013 |
USA: Oklahoma City - Singles - Main |
| 1/8-finals | Buchanan C. | Klein M. | 2:0 (6:1, 6:2) | dettagli | 11.04.2013 |
| 1/16-finals | Klein M. | Pokrajac M. | 2:1 (4:6, 7:6, 6:2) | dettagli | 09.04.2013 |
USA: Costa Mesa - Singles - Main |
| 1/16-finals | Podlipnik-Castillo H. | Klein M. | 2:0 (6:2, 6:3) | dettagli | 19.03.2013 |
USA: Calabasas - Singles - Main |
| 1/8-finals | Abid H. | Klein M. | 2:0 (6:1, 6:4) | dettagli | 14.03.2013 |
| 1/16-finals | Massu N. | Klein M. | 1:2 (2:6, 7:5, 4:6) | dettagli | 14.03.2013 |
Mexico: Acapulco - Singles - Qualification |
| Semi-finals | Odesnik W. | Klein M. | 2:0 (6:3, 6:1) | dettagli | 24.02.2013 |
Mexico: Tehuacan - Singles - Main |
| 1/8-finals | Klein M. | Mina G. | 0:2 (6:7, 1:6) | dettagli | 13.02.2013 |
| 1/16-finals | Klein M. | Crowley K. | 2:0 (6:1, 6:1) | dettagli | 11.02.2013 |
Mexico: Mexico City - Singles - Main |
| 1/8-finals | Nishioka Y. | Klein M. | 2:0 (7:6, 6:2) | dettagli | 07.02.2013 |
| 1/16-finals | Klein M. | Peralta-Tello E. | 2:0 (6:2, 6:4) | dettagli | 06.02.2013 |
Mexico: Tijuana - Singles - Main |
| Semi-finals | Klein M. | Barrientos N. | 0:2 (5:7, 4:6) | dettagli | 02.02.2013 |
| Quarter-finals | Klein M. | Malouli L. | 2:1 (6:1, 3:6, 6:3) | dettagli | 31.01.2013 |
| 1/8-finals | Schnitman A. | Klein M. | 1:2 (6:4, 6:7, 3:6) | dettagli | 30.01.2013 |
| 1/16-finals | Kryvonos N. | Klein M. | 0:2 (2:6, 3:6) | dettagli | 28.01.2013 |
Mexico: Ixtapa - Singles - Main |
| Semi-finals | Benneteau A. | Klein M. | 2:0 (6:0, 6:3) | dettagli | 26.01.2013 |
| Quarter-finals | Klein M. | Diaz-Figueroa C. | 2:1 (2:6, 7:5, 6:2) | dettagli | 25.01.2013 |
| 1/8-finals | Klein M. | Song E. | 2:0 (6:3, 6:1) | dettagli | 24.01.2013 |
| 1/16-finals | King D. | Klein M. | 0:2 (3:6, 1:6) | dettagli | 22.01.2013 |
Mexico: Mazatlan - Singles - Main |
| Quarter-finals | Quintero M. | Klein M. | 2:0 (6:2, 6:2) | dettagli | 23.11.2012 |
| 1/8-finals | Wettengel C. | Klein M. | 0:1 RET. (2:6) | dettagli | 22.11.2012 |
| 1/16-finals | Hank T. | Klein M. | 0:2 (6:7, 2:6) | dettagli | 20.11.2012 |
Mexico: Merida - Singles - Main |
| 1/16-finals | Klein M. | Pouille L. | 0:2 (2:6, 1:6) | dettagli | 07.11.2012 |
Mexico: Cancun - Singles - Main |
| Final | Klein M. | Wettengel C. | 2:1 (4:6, 6:4, 6:4) | dettagli | 04.11.2012 |
| Semi-finals | Klein M. | Hernandez-Fernandez J. | RET. | dettagli | 03.11.2012 |
| Quarter-finals | Klein M. | Bondarenko V. | 2:1 (6:7, 6:3, 7:5) | dettagli | 02.11.2012 |
| 1/8-finals | Farren C. | Klein M. | 1:2 (3:6, 6:2, 3:6) | dettagli | 01.11.2012 |
| 1/16-finals | Grandon Diaz C. | Klein M. | 0:2 (3:6, 3:6) | dettagli | 31.10.2012 |
Colombia: Villavicencio - Singles - Main |
| Quarter-finals | Hormazabal G. | Klein M. | 2:1 (6:4, 6:7, 7:6) | dettagli | 04.10.2012 |
| 1/8-finals | Zuluaga Gaviria B. | Klein M. | 0:2 (2:6, 0:6) | dettagli | 03.10.2012 |
| 1/16-finals | Klein M. | Kauer N. G. | 2:0 (7:5, 6:3) | dettagli | 01.10.2012 |
Mexico: Manzanillo 3 - Singles - Main |
| 1/16-finals | Klein M. | Quintero M. | 0:2 (1:6, 5:7) | dettagli | 18.09.2012 |
Mexico: Manzanillo 2 - Singles - Main |
| Quarter-finals | Klein M. | Arevalo M. | 0:2 (2:6, 2:6) | dettagli | 14.09.2012 |
| 1/8-finals | Reyes-Varela M. A. | Klein M. | 0:2 (0:6, 1:6) | dettagli | 13.09.2012 |
| 1/16-finals | Klein M. | Racz C. | 2:0 (6:3, 6:4) | dettagli | 11.09.2012 |
Mexico: Manzanillo - Singles - Main |
| Quarter-finals | Schnitman A. | Klein M. | 2:1 (3:6, 6:4, 6:1) | dettagli | 07.09.2012 |
| 1/8-finals | Klein M. | Shabaz M. | 2:1 (3:6, 7:6, 6:1) | dettagli | 05.09.2012 |
| 1/16-finals | Klein M. | Vidal S. | 2:1 (2:6, 6:2, 6:4) | dettagli | 03.09.2012 |
USA: Joplin - Singles - Main |
| 1/8-finals | Webb D. | Klein M. | 2:1 (6:4, 0:6, 6:4) | dettagli | 19.07.2012 |
| 1/16-finals | White Z. | Klein M. | 1:2 (6:1, 1:6, 2:6) | dettagli | 18.07.2012 |