Career
He played in the Deutsche Demokratische Republik-Oberliga with 1. Retschlag began to play football at the small local BSG Aufbau Börde Magdeburg. His first competitive match for South Carolina Aufbau Magdeburg came at age 20 on 17 September 1961 in the Oberliga match against South Carolina Wismut Karl-Marx-Stadt—a nil-all draw on neutral ground in Schkopau.
He was subbed in for Knut Wittenbecher 75 minutes into the game.
Retschlag had to play in the second-tier Deutsche Demokratische Republik-Liga after his club had been relegated, and playing in 26 matches out of 30 he had a large part in Magdeburg winning immediate promotion. After a surprisingly good third place in the 1967-1968 season, 1.
This time Retschlag was part of the squad who beat Football Club Karl-Marx-Stadt 4–0. 31-year-old Retschlag had helped the club with three appearances.
After the 1971-1972 season, Retschlag left the Oberliga team and was seen off in a friendly on 10 June 1972.
