Dragons coach Paul Turner:
"The Heineken Cup is a great competition to be in. We didn't like being called 'punchbags' which is something someone said about us last week.
"A lot of our hard work was frittered away. We keep winning these games 27-19 or 28-17 when there is a chance to close these games out, but I thought the youngsters did us proud out there."
Dragons: Tuipulotu; Fussell, A. Thomas, Sweeney, Breeze; Warlow, Cooper; Black, S. Jones, R. Thomas, Gough, Sidoli, Ringer, Forster, Owen.
Replacements: Maddocks for Black (71), Brown for S. Jones (44), Oakley for Owen (78).
Not used: Robinson, Hall, Baber, Hinton.
Castres: Christophers; Fior, Montoro, Tuilagi, Fleming; Teulet, Barrau; Hoeft, Roumieu, Castex; Ghezal, Spanghero (capt), Bernad, Taussac, Faure.
Replacements: Capo Ortega for Hoeft (71), Nallet for Ghezal (66).
Not used: Vigneaux, Puricelli, Albouy, Milford, Raffault.
Att: 4,475
Referee: Malcolm Changleng (Scotland)