When people are coming to Krakow and we show them how and where we practice, they are like, 'Seriously? Are you kidding me?' But we're always saying that what matters about the courts - the lines, the nets - are the same. I'm practicing in Poland even when I don't have good facilities.

Sometimes you can really serve well and win the match because of the serve. I have the opposite thing now, so it's kind of hard. I can just really play with my forehand and backhand.

It's always difficult, especially the U.S. Open, the last of the Grand Slams. It's always tough because you know, the season is very long. I really played a lot this year. Sometimes it's really hard to stay focused all the time because you're really tired after the whole season.

I tried golf for a while, but I wasn't very good at it, so I didn't play a lot of golf. I enjoy all sports, not just football. I like basketball, baseball, and I got into the World Cup. So really, sports in general are my life, and football specifically.

As a guy from Northern Ireland who supported Celtic and worked in football, I'm living my dream here.

Making movies was more a reaction to not being chosen for sports. Other kids were out there playing at whatever; I was off making something blow up and filming it, or making a mould of my sister's head using alginating plaster.

I didn't play football in school, but I've been a fan of football all my life. I have a fair understanding of it. Doing movies about it really helps because you know what makes them work and what doesn't.