Flavia Pennetta beat fellow Italian Roberta Vinci to win her first Grand Slam title at the US Open, and then announced her retirement.
Pennetta, the 26th seed, won 7-6 (7-4) and 6-2 to become only the second Italian woman to win one of the tennis majors.
She then said: “I make a big decision in my life, this is the way I like to say goodbye to tennis.”
The 33-year-old from Brindisi confirmed she plans to play the rest of the season before retiring.
“One month ago I decided that this is the way I would say goodbye to tennis,” added Pennetta, who collected a winner’s cheque of $3.3m (£2.1m).
“This is my last and I couldn’t think of finishing in a better way.”