Sinner is currently third in the ATP singles world rankings.
“It would be easy to talk about self-discipline and motivation now,” Spalletti said to his players, who applauded the 22-year-old.
“All you have to do is take a piece of him.”
Former Juventus and Azzurri captain Gianluigi Buffon, who is now the national team’s delegation head, added to the praise heaped on the Australian Open champion who also led Italy to victory in the Davis Cup last year.
“We follow you all the time with great pride,” Buffon said.
“You are a truly wonderful example.”
Italy face Venezuela in Fort Lauderdale on Thursday and Ecuador in New Jersey on Sunday, both friendly encounters.
Sinner is in Florida for the Miami Open.
ANSA
