Arsenal returned with a reassuring victory from the stadium of its host Olympiacos, Greece, with an unanswered goal in the first leg of the 32nd round of the European Football League.
He scored the winning goal for Arsenal Alexander Lacazette in the 81st minute and the Gunners managed to keep their lead until the end of the game's normal time.
With the same result, Roma defeated its guest Gent, and Carles Perez scored the winning goal in the 13th minute.
Wolverhampton, England, came close to qualifying for the final price of the tournament by winning the biggest victory on Thursday in Europalig, with a 4-0 victory over Espanyol.
German Eintracht Frankfurt also made a significant step towards the final price of the championship, after its 4-1 victory over its Austrian Red Bull Salzburg.