Players who have lost by walkover or who retired during a match.  
(3 or more times).                                       
Name               Number of Matches
Maggi, Fabio               6
Charpentier, Marcelo       5
Elsner, Daniel             5
Fernandez, Ruben           5
Laporte, Anthony           5
Nargiso, Diego             5
Verkerk, Martin            5
Canovas, Marc              4
Gisbert, Jr., Juan         4
Gould, Nick                4
Grasselli, Andrea          4
Malcor, Olivier            4
Maria, Charles             4
Martin, Cyrille            4
Massu, Nicolas             4
Menzler, Markus            4
Monnecchi, Marco           4
Rosa, Leandro              4
Armando, Hugo              3
Bourgeois, Luke            3
Brooke, Shawn              3
Caballero, David           3
Calatrava, Alex            3
Cardinali, Federico        3
Carlson, Chad              3
Carvallo, Paulo            3
Catala, Jorge              3
Catar, Tomas               3
Costa, Albert              3
Cuadrado, Carlos           3
Cuaz, Julien               3
Dickson, Simon             3
Dupre, Thomas              3
Ferreira, Adriano          3
Fluitt, Marcus             3
Franklin, Cary             3
Furmanski, Damian          3
Golmard, Jerome            3
Gross, Oliver              3
Heuberger, Ivo             3
Holland, Leigh             3
Hromec, Martin             3
Hunt, Alistair             3
Johansson, Thomas          3
Kim, Kevin                 3
Krusic, Gregor             3
Larsson, Magnus            3
Llodra, Mickael            3
Marx, Guillaume            3
Milligan, Luke             3
Motomura, Goichi           3
Muller, Matthias A.        3
Perry, Todd                3
Salvador, David            3
Sampras, Pete              3
Sekulov, James             3
Sousa, Tiago               3
Svetlik, Radovan           3
Tiilikainen, Kim           3
Trudgeon, Matthew          3
van Lottum, John           3
Varriale, Alessio          3
Velez, Ezequiel            3
Ventura, Ferran            3
Ventura, Santiago          3
Wakefield, Haydn           3
Wassen, Rogier             3
Weinzierl, Jan             3
Zabaleta, Mariano          3
Zorzi, Diego               3