Two days after completing his switch from Newcastle, Clark came off the bench to score for the under-18s, while Gordon followed up his goal in the under-23s’ Merseyside derby with an assist.
After a comprehensive showing in the derby, it was a more attritional contest against the Seagulls, who went ahead in the 20th minute through Evan Ferguson.
Brilliant work from Gordon, chasing down a loose ball, secured Liverpool their leveller before the half-hour mark, however, with the winger squaring for Jack Bearne to net in a 1-1 draw.
Owen Beck was among the standouts for the young Reds, with the Welshman building on a breakout pre-season as he settles into his role as the U23s’ first-choice left-back.
Brazilian goalkeeper Marcelo Pitaluga earned plaudits for a series of crucial saves, while 18-year-old James Norris – a natural left-back – filled in alongside Bearne and Tyler Morton in midfield.
The result means Liverpool are unbeaten after three games in
Meanwhile, an outbreak of COVID-19 in the Derby academy saw the U18s’ league fixture postponed, with a friendly against Watford hastily arranged in its place.
For the third game running, Marc Bridge-Wilkinson’s side netted five, and striker Oakley Cannonier got another brace to bring his tally to seven goals in three outings to start the campaign – though, of course, it remains five in two competitive games.
James Balagizi and Harvey Blair also got their names on the scoresheet, but most eye-catching was a goal off the bench for Clark, who swapped Tyneside for Merseyside on Thursday.
There are high hopes for the 16-year-old following his move – which came after face-to-face talks with Jurgen Klopp – and it was a confidence-boosting start for Clark at St George’s Park.
The U18s are not back in action until September 11, when they visit Nottingham Forest, but a host of Bridge-Wilkinson’s squad will be on international duty between now and then.
Cannonier, Mateusz Musialowski, Melkamu Frauendorf, Stefan Bajcetic and Harvey Davies are among those to have been called up.