These successes were followed by a bad financial plight and mediocre results until 1978/79, when the club won its 13th Championship title. In the 1980s the club was one of the poorest in the national league. The worst came in the season 1986/87, when the club, the only one in the country which so far played all the seasons of the official national top league, was relegated to the second tier. Especially shifty were the circumstances of the relegation decider, against Lechia Gdańsk, when Ruch's goalkeeper Janusz Jojko scored an infamous and bizarre own goal and the club lost the game 1:2. After one year Ruch returned to the top flight as winners of the seconed league and won the 14th Championship title, as the second freshly-promoted club in the national history (the first was Cracovia in 1937), a feat, especially as it was still one of the poorest clubs in the top tier and over half of the players were home-grown, including e.g. Dariusz Gęsior and the most renowned Krzysztof Warzycha, who was also, with 24 goals, the top scorer of the season.