[9] In July 1974 he won the silver medal at Jugendturnier der V. DDR-Spartakiade in Rostock with Leipzig's junior youth squad.

[11] Liebers debuted DDR-Oberliga on the last matchday of the season 1976/77, 21 May 1977, substituted for Henning Frenzel from 46 minutes of the match.

[12] He was promoted to the senior squad in 1978,[13] where he played in the DDR-Oberliga at the top level of the East German football league.

[2][15] He was sent-off "due to unsportsmanlike behaviour" at 80 minutes of the match held between Lok and Berliner FC Dynamo on 22 March 1986, because of the premature running out of the wall at the free kick, which was hardly punished with a card then.

[16][17][18] On 6 June 1981, at the FDGB-Pokal 1981 finale, the Lok number 8 scored a dream goal at 62 minutes of the match and gained 2–1 lead for the team.

FC Lokomotive Leipzig beat FC Girondins de Bordeaux with the legendary dramatic penalty shootout at the second leg of the semi-final in over-full-filled Leipzig's Zentralstadion on 22 April 1987,[21][22][6] proceeded to the final for the first time in the club history.

On 26 October 1988, Lok met SSC Napoli at the first leg of the first round of the 1988–89 UEFA Cup in Zentralstadion filled with over 80000 spectators, he disputed over territory with Diego Maradona in the midfield.

[28] He debuted to the A-national-team on 8 October 1980, at the friendly match with Czechoslovak Socialist Republic in Stadion Evžena Rošického,[29] soon was brought to the A-squad's journey to Argentina in January 1981.

[30] He competed for defending champion East Germany[31] at the 1980 Summer Olympics, including the appearance for the final in Luzhniki Stadium in front of the 80000 spectators against Czechoslovak Socialist Republic from 81 minutes of the match.

His back pass to the Lok teammate Ronald Kreer guided Ronald Kreer's decisive 25-metre direct shot at 81 minutes of the match, the goal led the team to the 2–0 win over The UEFA Euro 1984 champion France.

Liebers resigned his job as the head coach from SG Traktor Teichel in September 2020.