Growth type: Standard/Lasting
In 1997, he got his big break when Bayern Munich bought him along with Fink. He played well on his left flank, good enough to give star left full-back Bixente Lizarazu almost a full season on the bench. In the following seasons, trainer Ottmar Hitzfeld would often play them both, giving Bayern one of the best left flanks in Europe. Tarnat's Bayern career was extremely successful. He was German champion in 1999, 2000, 2001 and 2003, won the German Cup in 1998, 2000 and 2003 and the UEFA Champions League in 2001. Tarnat also played in the 1999 UEFA Champions League Final in which Bayern lost 2-1 to Manchester United with two stoppage-time goals.
In Bayern Munich's away match against Eintracht Frankfurt in the 1999-2000 Bundesliga season, Tarnat memorably played half an hour in the second half as a goalkeeper. In the match, Oliver Kahn was forced to leave the pitch after sustaining an injury in collision with teammate Samuel Kuffour and his replacement Bernd Dreher was also injured after he spent less than ten minutes on the pitch, allowing Tarnat to come off the bench to take his place between the sticks. Very remarkably, Bayern had trailed 0-1, but scored the equaliser only two minutes after Tarnat entered the match and eventually managed to win 2-1 after Kuffour scored the winning goal in the 80th minute