In 1993, he joined Bundesliga club SV Werder Bremen, after previously playing for Hertha BSC and Rot-Weiss Essen in the 2.

Basler joined FC Bayern Munich in 1996, where he won the Bundesliga title in 1997 and 1999, and scored the club's winning goal in the 1998 DFB-Pokal final.

Basler also scored the opening goal for Bayern Munich in their 1999 UEFA Champions League Final against Manchester United at Camp Nou, Barcelona with a free-kick in the sixth minute of the game.

He was named in the squad for the 1994 World Cup, and Euro 1996, the latter of which Germany won, although Basler didn't make any appearances in the tournament.

After only one year he left TuS Koblenz to sign a contract as head coach and manager with SV Eintracht Trier 05.