MILAN, May 6 (Reuters) - Juventus celebrations at winning Serie A were tinged with bitterness on Sunday as players and officials remembered how the club was stripped of the 2005 and 2006 titles over the Caliopoli match-fixing scandal.
Officially, Juve's 2-0 win at Cagliari brought them their 28th title but sporting director Giuseppe Marotta said that, as far as he was concerned, it was their 30th.
"It's our 30th Scudetto. We have 30 on all the champagne bottles and we have won 30 titles," he told television reporters.
"There was a lot of hard work from the whole club, but we absolutely deserved this. Our added value is Antonio Conte."
Goalkeeper Gianluigi Buffon said it was the second high point of his career after winning the World Cup with Italy in 2006, the same year Juve were demoted to Serie B in the scandal.
"I suffered a lot, six years is a long time but it was worth the wait," said Buffon, one of several members of the current squad who played in Serie B.
"This is my best moment after winning the World Cup," added the Italy goalkeeper who also won titles in 2002 and 2003.
"I won five titles on the field although they have only awarded me three of them, well, what can I do about it?" he said.
Alessandro Del Piero, used sparingly in the campaign at the age of 37, also remembered the players who agreed to play in Serie B after Juventus were demoted.
"For me and the others who were there, there is something very special about this moment," he said. "I would like to remember all the boys who played in Serie B, we all came back very happy."
"This is my payback for 2006."
Juventus took an unassailable four-point lead at the top on Sunday after champions AC Milan, the only side who could have caught them, lost 4-2 to Inter Milan.
(Writing by Brian Homewood in Berne; Editing by Ed Osmond )