Netherlands: Middelburg - Singles - Main |
| 1/16-finals | Oostdam R. | De Bakker T. | 0:2 (2:6, 3:6) | details | 05.07.2012 |
Netherlands: Alkmaar - Singles - Main |
| 1/16-finals | Oostdam R. | Sidorenko A. | 0:0 RET. (2:5) | details | 20.06.2012 |
Netherlands: Zuidwolde - Singles - Main |
| 1/16-finals | Oostdam R. | De Bakker T. | 1:2 (5:7, 6:3, 2:6) | details | 12.06.2012 |
Turkey: Mersin 3 - Singles - Main |
| 1/16-finals | Micolani G. | Oostdam R. | 2:0 (6:3, 6:0) | details | 28.05.2012 |
Turkey: Mersin 2 - Singles - Main |
| 1/16-finals | Oostdam R. | Reynet F. | 1:2 (3:6, 7:5, 3:6) | details | 22.05.2012 |
Israel: Herzlia 3 - Singles - Main |
| 1/16-finals | Bossel A. | Oostdam R. | 2:0 (6:4, 6:1) | details | 26.03.2012 |
Israel: Herzlia 2 - Singles - Main |
| 1/16-finals | Oostdam R. | Rosenholm P. | 0:0 RET. (1:5) | details | 20.03.2012 |
Israel: Herzlia - Singles - Main |
| Quarter-finals | Fitzpatrick A. | Oostdam R. | 2:1 (1:6, 6:4, 7:5) | details | 15.03.2012 |
| 1/8-finals | Semjan M. | Oostdam R. | 1:2 (65:7, 7:63, 5:7) | details | 14.03.2012 |
| 1/16-finals | Oostdam R. | Dubail J. | 2:0 (7:6, 6:4) | details | 13.03.2012 |
Turkey: Antalya 5 - Singles - Qualification |
| Final | Borgo F. | Oostdam R. | 2:0 (6:4, 6:3) | details | 06.02.2012 |
| Semi-finals | Farin K. | Oostdam R. | 1:2 (3:6, 6:4, 1:6) | details | 05.02.2012 |
| Quarter-finals | Toyoshima K. | Oostdam R. | 0:2 (1:6, 3:6) | details | 05.02.2012 |
Mexico: Guadalajara - Singles - Main |
| Quarter-finals | Gray W. | Oostdam R. | 2:0 (7:5, 6:2) | details | 16.12.2011 |
| 1/8-finals | Oostdam R. | El M. A. | 2:1 (5:7, 6:3, 6:0) | details | 15.12.2011 |
| 1/16-finals | Oostdam R. | Serrano S. | 2:0 (6:4, 7:63) | details | 13.12.2011 |
Mexico: Tehuacan - Singles - Main |
| 1/16-finals | Oostdam R. | Garza D. | 0:2 (2:6, 3:6) | details | 07.12.2011 |
Mexico: Ixtapa - Singles - Main |
| Semi-finals | Oostdam R. | Garza D. | 0:2 (6:7, 2:6) | details | 03.12.2011 |
| Quarter-finals | Oostdam R. | Gallardo-Valles M. | 2:0 (6:2, 7:6) | details | 02.12.2011 |
| 1/8-finals | Oostdam R. | Ramirez C. | 2:0 (6:4, 6:4) | details | 01.12.2011 |
| 1/16-finals | Diaz-Barriga L. | Oostdam R. | 0:2 (4:6, 5:7) | details | 30.11.2011 |
Spain: Vic - Doubles - Main |
| 1/8-finals | Bos J./Oostdam R. | Reda M./Sloane R. | WO. | details | 24.04.2012 |
Israel: Herzlia 3 - Doubles - Main |
| Quarter-finals | Oostdam R./Silva C. | Allemby J./Djurdjevic B. | 1:2 (6:4, 65:7, 2:10) | details | 28.03.2012 |
| 1/8-finals | Oostdam R./Silva C. | Cohen E./Smilansky I. | 2:1 (5:7, 6:2, 10:7) | details | 26.03.2012 |
Israel: Herzlia 2 - Doubles - Main |
| Quarter-finals | Benneteau A./Michon A. | Oostdam R./Silva C. | 2:0 (6:1, 6:0) | details | 21.03.2012 |
| 1/8-finals | Mazor N./Ram Harel O. | Oostdam R./Silva C. | 0:2 (2:6, 2:6) | details | 19.03.2012 |
Israel: Herzlia - Doubles - Main |
| Quarter-finals | Oostdam R./Silva C. | Fitzpatrick A./Jones J. | 0:2 (63:7, 63:7) | details | 14.03.2012 |
| 1/8-finals | Oostdam R./Silva C. | Darmon A./Peleg E. | 2:0 (6:3, 6:3) | details | 12.03.2012 |
Netherlands: Enschede - Doubles - Main |
| Quarter-finals | Brons B./Oostdam R. | Fransen S./Koolhof W. | 0:2 (5:7, 3:6) | details | 24.08.2011 |
| 1/8-finals | Brons B./Oostdam R. | Roessing M./Zay M. | 2:0 (6:4, 7:6) | details | 22.08.2011 |