Charlton 4-0 Oxford Utd
Simon Church scored twice as Charlton thrashed Oxford to progress to the Capital One Cup second round.
Former Reading striker Church, who was making his home debut, opened his account when he latched on to a deflected Joe Pigott effort.
Danny Green doubled their lead with a direct free-kick before Church added a second from Cedric Evina's pass.
Pigott converted a late penalty - awarded for Jake Wright's trip on Jordan Cousins - to complete the rout.
The heavy defeat for the U's comes after they beat Portsmouth 4-1 on the opening day of the League Two season.
Oxford's best chance against a dominant Charlton side fell to Ryan Williams, who was denied from close range by goalkeeper Ben Hamer after finding the end of Johnny Mullins' pass.