Career
Bongartz began his footballing career at SG Wattenscheid 09 and became a central midfielder to be reckoned with even before moving to Football Club Schalke 04 in 1974. He participated in the Euro 76 in Yugoslavia. He moved to 1. Football Club Kaiserslautern in 1978 where he was to finish his career in 1984.
Altogether Bongartz played 298 Bundesliga games, scoring 39 goals.
He later became the coach of Borussia Mönchengladbach and 1. Football Club Kaiserslautern. During the 2003-2004 season he became the trainer of SG Wattenscheid 09.
His best Bundesliga result as a manager is seventh place in 1987 with Kaiserslautern.
