Charlie Savage scored his first goal of the season and put in a man-of-the-match performance as his Reading side knocked out dad Robbie's Peterborough United in the FA Cup first round.

The Wales midfielder has struggled to get minutes for Leam Richardson's side as they battle for a League One promotion spot, but he was in from the start at the Weston Homes Stadium and made a big impression as Posh continue to struggle.

Dad Robbie got off to a dream start in his new role as Peterborough won at Leicester City but they are without a win in four league games since then and in a woeful first half they were dominated, going three goals down by the break.

Daniel Kyerewaa started the rout, drifting in from the left wing, playing a one-two with Andy Rinomhota and tucking his shot beyond the grasp of goalkeeper Alex Bass.

Jack Marriott picked up his ninth goal of the season with a header he could barely miss, such was the quality of Haydon Roberts' curling cross from the left-hand side.

The game was over as a contest by half-time as Savage junior, who was influential throughout, cleverly allowed the ball to run across his body and struck a shot which deflected off defender Lucca Mendonca to nestle in the far corner.

The Posh fans reacted with boos at half-time but it got no better as substitute Jamie Reid was left in acres of space to lob Bass for the fourth and then escaped his marker to slide home a fifth from Liam Fraser's fine pass.