Conversation so far:
When did Michael Owen score his first competitive, professional goal?
On 6 May 1997, Michael Owen scored on his Liverpool debut against Wimbledon at Selhurst Park.
What was Michael Owen's jersey number?
Michael Owen was handed the number 7 shirt vacated by the departure of Cristiano Ronaldo to Real Madrid.
What was the name of the league Michael Owen joined?
The name of the league Michael Owen joined was the Premier League
What are the name of the players who wore Michael Owen's number 7 jersey?
The number 7 jersey had previously been worn by many of United's other illustrious players, including Johnny Berry, George Best, Steve Coppell, Bryan Robson, Eric Cantona and David Beckham.

Question: where did he need surgery?
Self-contained rewrite: Where did Michael Owen need surgery?