Arsenal left San Siro with smiles on their faces, and Salzburg earned a notable victory at Dortmund, but there is plenty of life left in the round of 16 ties following Thursday's first legs. Europa League round of 16 first legsAtlético 3-0 Lokomotiv MoskvaCSKA Moskva 0-1 LyonDortmund 1-2 SalzburgLazio 2-2 Dynamo KyivLeipzig 2-1 ZenitMarseille 3-1 AthleticMilan 0-2 ArsenalSporting CP 2-0 Plzeň