He competed with the German national basketball team at the 2010 FIBA World Championship.

Schwethelm was then linked to a two-year deal with fellow Bundesliga side Eisbären Bremerhaven.

[3] In the 2009–10 season, he averaged a career-high seven points per game in helping the team to the league semifinals.

He first played with the German national basketball team at the 2004 FIBA Europe Under-16 Championship.

Schwethelm's first major tournament as a member of the German senior national team was the 2010 FIBA World Championship in Turkey.