Owen Hargreaves made his first appearance for United as a young XI overcame a Peterborough team managed by Sir Alex Ferguson's son Darren.
The recent signing from Bayern Munich came on at half-time as a sub for Darren Gibson, who'd starred in the Reds' win at Doncaster less than 24 hours earlier.
Hargreaves was a busy figure but he was arguably overshadowed by the scorer of United's stunning third goal, Dong Fangzhuo. The Chinese striker performed a skilful Ronaldo-esque manouvere inside the box before firing the ball home in the 77th minute. This came just five minutes after Richie Jones made it 2-1 when another Dong shot was parried.
Adam Eckersley opened the scoring for United with an angled drive in the 23rd minute, only for Peterborough's Rene Howe to equalise with a similar strike four minutes after the break.
Darren Ferguson revealed on BBC Radio Cambridge he was expecting his father to field a slightly different side.
"There was a bit of confusion because we thought Fletcher and Silvestre were coming down to play," said Ferguson junior.
"Hargreaves, Pique, Lee Martin and others were out there, though. They've got quality throughout the squad. It wasn't an overly competitive game but thoroughly enjoyable. It was a good day for the whole family."
United XI: Heaton, Simpson, A. Eckersley, Shawcross (Bardsley, 46), J. Evans (S. Evans, 79), Pique (Lea, 46), R. Jones, Gibson (Hargreaves, 46), Campbell, Dong, Martin.
With thanks to Cliff Butler, reporting from Peterborough.