Ten-man Wycombe Wanderers extended their unbeaten League Two run to five matches with victory at Accrington.
The visitors went ahead when QPR loanee Bruno Andrade scored from 12 yards as Stuart Lewis's shot from the right was deflected to the far post.
Matt McClure made it 2-0 when he latched onto a rebound after Dean Morgan burst through and saw his shot hit the post.
McClure was later sent off following two quick yellow cards.
VIEW FROM THE DRESSING ROOM
Accrington manager Leam Richardson told BBC Radio Lancashire:
"It was very poor, lacklustre and not enjoyable. That's the worst we've been for a long time.
"They're a young set and we try and educate them through the week, but the damage was done in the first half. I'll never have a go at the lads when they apply themselves correctly.
"Today, they didn't do that, and they know that. They know my feelings."