Graeme Souness paid tribute to David Dunn after the midfielder responded to his manager's criticism by returning from injury to inspire Blackburn to a 2-1 victory at Chelsea.
Dunn (left) celebrates his goal
Earlier this season, Souness had warned Dunn against the perils of allowing his lifestyle and attitude to undermine his talent.
But Dunn showed his ability by crossing for Dwight Yorke to net and then scoring the winner at Stamford Bridge.
He is technically very good but he's still learning the game
Souness declared: "David did very well and scored the second goal that won the game for us. He is technically very good but he's still learning the game.
"He ran out of steam towards the end of the match but he's only just back from injury and even though he wasn't in his favourite central position, he put his stint in out on the wings."
Blackburn were also indebted to their stout defence and especially to goalkeeper Brad Friedel, who pulled off a string of superb saves to keep them in the game.
"Brad once again showed he's a top-class keeper and made some saves look easy.
"But we also had an experienced back four out there who played like men," added Souness.
"You expect to be put on the back foot at Stamford Bridge and we rode our luck at times.
We created some chances but they were more of a team than us
"Chelsea will feel hard done-by that they didn't get anything out of the game, but there have been other times this season when we haven't got what we deserved out of a match."
Chelsea boss Claudio Ranieri admitted the display had been the "worst of the season" by his side as Gianfranco Zola's 300th appearance for the club was overshadowed.
"We created some chances but they were more of a team than us.
"I had told the players it was a crucial moment for us but, even when you have the will,
sometimes you can still be frustrated," he said.