When Denis Irwin limped off the Old Trafford pitch after just 35 minutes against Everton on 2 March 1991, Alex Ferguson replaced him with a skinny 17-year-old.
Now, almost 21 years later, that talented teenager - namely Ryan Giggs - has won more trophies than any other player in the history of English football and is closing in on his 900th appearance for Manchester United.
Wow.