[1] Günther is known as one of the best domestic players in Germany of his time, as he has played in eight BBL All-Star Games.

Günther had a highly successful 2007–08 season for Hagen, averaging 14.5 points and 2.4 assists per game.

[2] Following the season, he was named the league's Most Improved Player and was voted to the Eurobasket.com All-ProA Second Team.

In the 2009–10 season, he averaged 6.6 points and 2.5 assists for Ulm, although the team struggled to a 13th-place finish in the league.

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