The lead role was originally intended for Hugh Grant.
At one point, Reese Witherspoon was supposed to play the female lead.
Kirsten Dunst underwent serious physical training to prepare for this role.
Klaus Badelt was attached to the film but he couldn't finish the job because Catwoman (2004) had to undergo re-shoots after testing poorly with screeners.
Scenes for the film were filmed during the Wimbledon tournament 2003. The actors would walk out on court at the beginning or end of a match as though they were really competing. The officials and spectators were actual tennis officials and spectators, rather than extras. It is the only time in the history of the tournament that this has been allowed.
Getting the actors to play professional-looking tennis proved much more difficult than anticipated. Eventually, it was decided to film them performing the strokes and digitally add the ball afterwards.
Scenes were filmed on Brighton beach between 1 September 2003 and 6 September 2003 and involved 250 extras hired from the local public.
In a shot of the film that was filmed in Brighton, the door on the rounded corner of the houses is in fact painted on.
The actors actually did their own serves with real tennis balls.
The scenes showing the public queuing up outside Wimbledon were in fact shot outside London's Zoo, simply because it looks more interesting.
Ian Somerhalder was considered for the role of Jake Hammond but was rejected by the director.
According to the script Peter's car was a rare Porsche 356, but for filming a "Chesil Speedster" 356 replica was used.