Coming off a disappointing 1-0 loss to Everton on Sunday, Arsenal produced an attacking display that Napoli was not able to stop. Aaron Ramsey struck early and Kalidou Koulibaly added an own goal to put the home side in command at the Emirates Stadium.
For Arsenal and Chelsea, winning the Europa League would secure a route back into the Champions League if they fail to finish in the top four in the Premier League.
Napoli is second in Serie A and has no such worries but Valencia, currently sixth in the Spanish league faces the same scenario.
The second legs will be played on April 18.
Here’s a look at Thursday’s games:
Source: FOX Sport