"I have no doubts whatsoever that Danny can play at the highest level," said Hughes, the former Manchester United warrior who has seen a few defenders close-up and personal in his time.
"But I think he is just beginning to realise that himself.
"Maybe he did not realise his own capabilities before, but he seems to enjoy the stage I have given him."
The Cardiff City centre-back was Wales' man of the match in Wednesday's Euro 2004 qualifying defeat against Serbia-Montenegro.
Despite being subjected to disgraceful racial abuse by the partisan crowd inside the Red Star Stadium, the 23-year-old produced a performance as good as the one he delivered in the momentous 2-1 win over Italy last October.
On that night Gabbidon, then plying his trade in Division Two, did an excellent job patrolling Juventus' golden boy Alessandro Del Piero.
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