Rivaldinho (left) and Rivaldo (right) pose in Mogi Mirim kit
At the age of 41, you'd think there would be nothing left for Rivaldo to achieve in football. The former Barcelona and AC Milan star has won league titles in Brazil and Spain, the Champions League with Milan and of course the World Cup.
Yet until Tuesday there was one ambition still burning away inside him: the desire to line up in a professional match alongside his son.
His son, Rivaldinho (little Rivaldo in Brazilian), has just broken into the first team for the club, and has picked up two goals in five appearances as a striker so far this season.
But while Rivaldo is still registered as a player for the club he runs and occasionally turns out when needed, the two had not shared a pitch until this week, when the ageing superstar came off the bench in the 56th minute to play alongside his lad.
It's an incredibly rare feat, though not unheard of: Ian Bowyer and son Gary played on the same Hereford United team in the 1980s, while Alex Herd and son David played for Stockport County back in the 1950s.
More recently, Eidur Gudjohnsen very nearly had the honour of playing with his father for Iceland: back in 1996 Gudjohnsen Jr was brought on as a sub in a match that his father, Arnar was playing. Unfortunately, the player he was brought on to replace was his own dad!
So Rivaldo's feat is very unusual indeed, and he celebrated it by sharing an emotional message with fans via his Instagram page: "I want to thank God for such a special day in my life, being able to play with my son @_rivaldojr in an official match. We drew the game 1-1 but this day will go down in history. Many thanks my God for Your what you have done and still do in my life."