There has been a mixed reaction to Giuseppe Rossi being left out of Italy's World Cup squad, but the player's grandfather is in doubt it was a mistake.
Rossi was top of the Serie A scoring chart after a superb start to the season and appeared certain to be headed for Brazil.
But a cruciate ligament injury in January left him facing a race against time to get back to full fitness.
Despite managing to make it back to action and featuring for Italy in their friendly against the Republic of Ireland, Rossi didn't convince coach Cesare Prandelli he was ready for the World Cup.
The distraught striker reacted by rubbishing claims he wasn't match fit and polls in Italy show that most people in the country would have brought Rossi.
"Prandelli has acted like a clown," he said on Radio 2. "He has betrayed and misled my grandson.
"I will be supporting the USA at the World Cup because in Italy there are traitors.
"It hurts because we didn't expect it. He was kept guessing and just two days ago Prandelli was saying nice things to him."
Rossi was born in New Jersey to Italian immigrant parents and he was offered the chance to play for the USA in 2006 when Bruce Arena asked him to attend a pre-World Cup training camp.
However, the 27-year-old chose to represent Italy and came through the youth teams to reach the senior side, which is a source of some resentment to American fans.
Italy will put their trust in Napoli man Lorenzo Insigne instead with Roma striker Mattia Destro also missing out.