Brighton enjoyed a comprehensive first victory in Europe as a goal in either half from Joao Pedro and Ansu Fati eased them to a 2-0 win against Ajax at the Amex Stadium.It took until the final minutes of a first half that Brighton had dominated for the breakthrough to arrive, Pedro tapping home on the rebound, as Ajax – second-bottom of the Eredivisie – did little more than look to preserve parity in the Europa League clash.The Dutch side have endured their worst start to a league season and, after sacking manager Maurice Steijn on Monday, they went down with barely a whimper as Fati's goal early in the second half showed the gulf between Roberto De Zerbi’s team and the four-time European champions.Ireland forward Evan Ferguson had to make do with 15 minutes off the bench but was assured by Seagulls boss Roberto De Zerbi earlier this week that he will be important to the team, amid a spate of injuries.Elsewhere, West Ham's unbeaten European record was reduced to ruins in Athens as they crashed to a 2-1 defeat at Olympiacos.The Hammers came a cropper in the shadow of the Acropolis as they suffered a first loss in UEFA competitions in 18 matches.David Moyes, who led his side to the Europa Conference League title last season, made seven changes for their Europa League Group A clash in the Greek capital.But his selection backfired as a soft goal from Olympiacos captain Kostas Fortounis and an own goal from stand-in Hammers skipper Angelo Ogbonna brought their undefeated run to a halt despite Lucas Paqueta's late reply.A victory would have all but secured West Ham's passage into the knockout stages but now they find themselves with work to do, lying level with Freiburg at the top of the group with Olympiacos two points