Pompey’s Academy side enjoyed a 1-0 win away to Newport County.
A tight game looked to be heading for a draw before Bradley Lethbridge struck in the dying moments.
The Blues youngsters were indebted to keeper Jack Collins, who made some fine saves, while a defender cleared one County effort off the line.
The academy team now have a festive break from competitive action. Their league programme resumes on Saturday, January 6.