Pompey Reserves fell at the first hurdle in the Hampshire Senior Cup, falling to a heavy defeat against Havant & Waterlooville.
It was always going to be tough for a youthful Blues side at Westleigh Park, with their hosts fielding a much more experienced line-up.
Jonah Ayunga netted a hat-trick for the Hawks, while Bradley Tarbuck added a brace and there were further goals for Alfie Rutherford and Chris Paul.
The first chance fell to Rutheford, who was left free to send a header narrowly past the post in the early stages.
But the deadlock was broken after just seven minutes, as a dangerous foray forward ended with former Pompey youngster Tarbuck finding the net.
The first decent chance for the visitors fell to Charlie Bell, whose 25-yard effort was deflected just past the upright.
Their opponents were enjoying territorial advantage, although Bradley Lethbridge found space to shoot wide of the target.
Instead it was the Hawks who scored again late in the first half, as Rutherford fired across Petar Durin and into the far corner.
And former Fratton trainee Sam Magri almost got in on the act just before the whistle, only to fire over after being played through on goal.
Half Time: Hawks 2 Pompey 0
Ayunga was introduced from the bench at the start of the second half and soon sent a fierce drive flying into the net.
Skipper Danny Kedwell looked to have extended the hosts’ lead further, but his header was ruled out for offside.
Leon Maloney finally brought a first decent save of the night from Kingsley Latham, who pushed away the winger’s free-kick.
But the Hawks were rampant and when Paul shot from outside the box, the ball took a heavy deflection to beat Durin.
They continued to press and another Ayunga effort was diverted behind, before Paul fired narrowly past the post.
And they made their experience count by adding three more goals in a breathless final 10 minutes to the contest.
Tarbuck crossed from the right and Durin was only able to parry the ball into the path of Ayunga, who thrashed in a fifth.
And it was Tarbuck who then found space to lob home from the edge of the box, before Ayunga found the corner of the net to complete his treble.
Hawks: Latham; Flannigan, Beckwith, Magri, Straker; Paul, Walton, Taylor (Ayunga 46), Tarbuck; Rutherford, Kedwell (c)
Subs not used: Worner, Drury
Pompey: Durin; Dandy, Casey (c), Rew; Teggart (Kelly 46), Bell, Bridgman (Brook 46), Flint, Maloney; Anderson (Lee 65), Lethbridge
Subs not used: L.Pitman, Robb
Referee: Gary Parsons