Raków beat Sturm Graz 1-0 in Austria on Thursday night, recording their first victory in the main stage of a European competition.
Substitute John Yeboah scored the winning goal on 81 minutes, the PAP news agency reported.
After five rounds of matches, Raków sit fourth in Group D of the 2023/2024 UEFA Europa League, the continent's second-tier club competition.
Raków can finish third and qualify for the knockout-round play-offs in the third-tier competition, the UEFA Conference League; their last group game is at home to Italy's Atalanta Bergamo on December 14, European football's governing body UEFA said.
Meanwhile, Legia Warsaw lost 1-2 to Aston Villa in their Conference League match in Birmingham on Thursday, the PAP news agency reported.
Ernest Muçi scored for the Polish Cup holders on 20 minutes.
After five rounds of matches, Legia are second in Group E of the 2023/2024 UEFA Conference League on nine points; they next play AZ Alkmaar of the Netherlands in Warsaw on December 14, needing a point to progress to the competition's knock-out stages.
Before Thursday's match, some of Legia's fans clashed with police, with three officers suffering injuries, according to British media.
Aston Villa banned these supporters from entering the stadium, prompting Legia's officials to boycott the game, the PAP news agency reported.
Earlier, the English club reduced the allocation of tickets for Legia fans amid police concerns over possible violence, following unrest at a match against AZ Alkmaar in October, according to news reports.
(pm/gs)
Source: IAR, PAP, UEFA