Harry Anderson bagged a hat-trick as Pompey eased to a 4-1 victory at Cheltenham in the Youth Alliance League.
The Northern Ireland striker was teed-up by Seokjae Lee for his opener, but that was cancelled out by the Robins.
Harrison Brook restored the advantage and Anderson (pictured) then added two more goals to complete his treble.
Professional development phase coach Liam Daish said: “The current restrictions meant the lads were straight off the bus and onto the pitch for the warm-up.
“But they were still able to make a good start and Harry’s first was a great team goal that saw us play out from the back.
"We were a little bit apprehensive about how it might affect the players, but they’ve been spot on in their attitude."
“It was quite comfortable in the end and lads played the right way – it was a solid performance all round.
“Four points from the opening two games is a positive start for us and hopefully we can build on that.
“There’s obviously been a lot of disruption for everyone in the past few months and it hasn’t been the usual pre-season. We’ve had to follow guidelines and work back up in stages.
“We were a little bit apprehensive about how it might affect the players, but they’ve been spot on in their attitude and I certainly can’t fault their commitment.”
Pompey: Pitman; Setters, Cadman, Kaba, Rew (Hughes 75); Jewitt-White, Bell; Lee, Dawson (Bridgman 70), Brook; Anderson