Rosenborg pulled off a minor upset, defeating German Bundesliga side 1. FSV Mainz 05 2-1 in the first leg of their UEFA Europa Conference League playoff tie at Lerkendal Stadion on August 22, 2025. The famous Norwegian club produced a spirited performance to take a lead to Germany, though Mainz's away goal keeps them firmly in contention. Rosenborg took a shock early lead, stunning the visitors, and doubled their advantage with a superb team move just after halftime. Mainz responded with increased urgency and grabbed a crucial away goal with twenty minutes remaining, setting up a grandstand finish. Rosenborg held on under intense pressure to secure a famous European victory, making the second leg at the MEWA ARENA a must-watch encounter.