Club loyalties are often decided when we're children. But it's not long before some of us regret out choices. Our reporter Philipp has had plenty of time for regrets. He supports Stuttgarter Kickers.
Halil Altintop previously played for Kaiserslautern, Schalke, Frankfurt and Trabzonspor. At the start of the season he transferred to tiny FC Augsburg. What motivated the move?
"When a goal's scored, the team turn their backs on you to return the ball to the centre spot". That's how former USA keeper Kasey Keller described his job.