WATCH highlights of Oxford United's 4-1 defeat at Cambridge United in the Papa John's Trophy.

A young U's side endured a nightmare end to the first half, with Sam Smith scoring twice and Luke McNally getting sent off in the space of 180 seconds.

Dan Agyei's excellent strike gave United hope, but Harvey Knibbs and Kai Yearn made the game safe for Cambridge late on.

Read the match report here

Karl Robinson: Cambridge loss is 'learning curve' for Oxford United youngsters

Video: YouTube/Oxford United Official