He has played for Team Germany in numerous tournaments, including the 2000 (as a sixteen-year-old) and 2001 World Junior Championships, the 2001 U18 Championships, the 2002 World Junior tournament, the 2003 Swiss Cup, the 2005 World Championships, the 2006 Winter Olympics, and the 2010 Winter Olympics.
Between 2003 and 2008 the cup has been sponsored by Swisscom and was therefore called the Swisscom Cup.
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Admir Seferagić made his professional debut at 17 August 2013 in the Swiss Cup against BSC Old Boys.
Botteron started his professional career at FC Zürich in 1972 and won three League Titles and three Swiss Cups before he left in 1980 to join the 1. FC Köln side of the early 1980s, where he played alongside the likes of Dieter Müller, Bernd Schuster, Tony Woodcock, Rainer Bonhof, Bernhard Cullmann, Klaus Fischer, Klaus Allofs and Stephan Engels.
He scored his first two goals for the club in the Swiss Cup 2011/12 second round 5:1 away win against FC Schötz on 15 October 2011.
He spent the next seven seasons in the Swiss leagues, later playing for Vaduz, where he made his debut in European competition, and Young Boys, where he won a runners-up medal in the Swiss Cup.