Neymar was unable to hold back the tears in his last match with Santos before joining Barcelona.
"It was very emotional," he said as he bid farewell to his team and fans. "The movie of my life since I was a little kid came to my mind at that moment."
Neymar announced his move to Barcelona late on Saturday, a day after Santos accepted offers from both the Spanish champions and Real Madrid, and said the striker should pick.
He was set to sign a five-year contract with Barcelona yesterday, becoming the latest addition to a star-filled roster that already includes four-time Fifa Player of the Year Lionel Messi, Xavi Hernandez and Andres Iniesta.
"It's a dream come true to be able to play for a team like Barcelona. I've always dreamed about doing that, and now it's happening," Neymar said. "It will be a great honour to play with players like Messi, Xavi, Iniesta, Dani Alves."
He played on Sunday because he wanted to wear Santos' jersey one more time and hear the fans chant his name again. But when he was introduced, he was booed by the Flamengo fans dominating the crowd at the Estadio Nacional in Brasilia.