Visar antalet förlorade matcher på Challengertouren.
| # | Player | Matches | Wins | Losses | PCT | 6-0 | 0-6 | 7-6 | 6-7 |
| 1 | Ivo Klec(SVK) | 39 | 14 | 25 | 0.359 | 0 | 3 | 2 | 8 |
| 2 | Alessio Di Mauro(ITA) | 50 | 25 | 25 | 0.500 | 1 | 3 | 8 | 10 |
| 3 | Uladzimir Ignatik(BLR) | 51 | 26 | 25 | 0.510 | 1 | 0 | 14 | 16 |
| 4 | Simone Vagnozzi(ITA) | 51 | 26 | 25 | 0.510 | 2 | 3 | 7 | 3 |
| 5 | Andreas Beck(GER) | 70 | 46 | 24 | 0.657 | 2 | 0 | 19 | 16 |
| 6 | Andrea Arnaboldi(ITA) | 38 | 15 | 23 | 0.395 | 0 | 2 | 9 | 8 |
| 7 | Konstantin Kravchuk(RUS) | 43 | 20 | 23 | 0.465 | 2 | 2 | 13 | 14 |
| 8 | Matteo Viola(ITA) | 47 | 24 | 23 | 0.511 | 6 | 2 | 5 | 5 |
| 9 | Alexander Kudryavtsev(RUS) | 50 | 27 | 23 | 0.540 | 4 | 0 | 10 | 7 |
| 10 | Rogerio Dutra Silva(BRA) | 58 | 35 | 23 | 0.603 | 4 | 0 | 5 | 11 |
| 11 | Kevin Kim(USA) | 33 | 11 | 22 | 0.333 | 1 | 3 | 7 | 5 |
| 12 | Ivo Minar(CZE) | 41 | 19 | 22 | 0.463 | 4 | 2 | 7 | 9 |
| 13 | Roberto Bautista-Agut(ESP) | 50 | 28 | 22 | 0.560 | 0 | 1 | 9 | 7 |
| 14 | Diego Junqueira(ARG) | 58 | 36 | 22 | 0.621 | 2 | 2 | 7 | 10 |
| 15 | Vincent Millot(FRA) | 35 | 14 | 21 | 0.400 | 1 | 1 | 8 | 5 |
| 16 | Andres Molteni(ARG) | 36 | 15 | 21 | 0.417 | 0 | 2 | 4 | 5 |
| 17 | David Guez(FRA) | 39 | 18 | 21 | 0.462 | 2 | 5 | 4 | 4 |
| 18 | Nikola Ciric(SRB) | 42 | 21 | 21 | 0.500 | 0 | 2 | 14 | 10 |
| 19 | Martin Klizan(SVK) | 57 | 36 | 21 | 0.632 | 2 | 0 | 7 | 8 |
| 20 | Adrian Ungur(ROU) | 58 | 37 | 21 | 0.638 | 3 | 1 | 15 | 3 |
| 21 | Benoit Paire(FRA) | 58 | 37 | 21 | 0.638 | 0 | 2 | 15 | 12 |
| 22 | Eric Prodon(FRA) | 60 | 39 | 21 | 0.650 | 4 | 0 | 10 | 10 |
| 23 | Paolo Lorenzi(ITA) | 60 | 39 | 21 | 0.650 | 6 | 0 | 6 | 6 |
| 24 | Horacio Zeballos(ARG) | 63 | 42 | 21 | 0.667 | 1 | 2 | 16 | 17 |
| 25 | Raven Klaasen(RSA) | 34 | 14 | 20 | 0.412 | 0 | 0 | 6 | 8 |
| 26 | Gianluca Naso(ITA) | 35 | 15 | 20 | 0.429 | 2 | 2 | 3 | 9 |
| 27 | Jaroslav Pospisil(CZE) | 37 | 17 | 20 | 0.459 | 3 | 0 | 6 | 7 |
| 28 | Juan Pablo Brzezicki(ARG) | 37 | 17 | 20 | 0.459 | 2 | 3 | 5 | 8 |
| 29 | Pavol Cervenak(SVK) | 38 | 18 | 20 | 0.474 | 0 | 2 | 10 | 9 |
| 30 | Dustin Brown(GER) | 43 | 23 | 20 | 0.535 | 1 | 1 | 7 | 5 |
| 31 | Stephane Robert(FRA) | 54 | 34 | 20 | 0.630 | 3 | 1 | 9 | 7 |
| 32 | Matteo Trevisan(ITA) | 26 | 7 | 19 | 0.269 | 0 | 1 | 2 | 5 |
| 33 | Joao Sousa(POR) | 34 | 15 | 19 | 0.441 | 1 | 3 | 6 | 7 |
| 34 | Federico Del Bonis(ARG) | 36 | 17 | 19 | 0.472 | 2 | 1 | 8 | 3 |
| 35 | Dusan Lojda(CZE) | 36 | 17 | 19 | 0.472 | 1 | 3 | 1 | 11 |
| 36 | Martin Fischer(AUT) | 38 | 19 | 19 | 0.500 | 2 | 1 | 9 | 6 |
| 37 | Simon Greul(GER) | 39 | 20 | 19 | 0.513 | 3 | 2 | 4 | 4 |
| 38 | Grega Zemlja(SLO) | 52 | 33 | 19 | 0.635 | 1 | 2 | 14 | 10 |
| 39 | Conor Niland(IRL) | 25 | 7 | 18 | 0.280 | 1 | 3 | 2 | 3 |
| 40 | Pierre-Ludovic Duclos(CAN) | 32 | 14 | 18 | 0.438 | 0 | 1 | 4 | 6 |
