Lopes howler gifts Benfica the win over Lyon
Defeats to RB Leipzig and Zenit in its opening two games had left Bruno Lage's side languishing at the foot of Group G, but it kick-started its campaign thanks to Lopes' moment of madness five minutes
The goalkeeper's attempt to start a quick counter backfired when his throw went straight to Pizzi, who gleefully struck a first-time effort into an empty net.
Memphis Depay had earlier cancelled out Rafa Silva's fourth-minute opener for Benfica, which travels to France for the return fixture in a fortnight with renewed confidence that it can progress to the knockout stages.