They used a back three with full-backs and two in front, although that part changed a bit from one half to the other.
Internationals, convalescents and Abdallah Sima, who is set to go on loan to Angers, were not involved.
Nor were Aaron Connolly, Florin Andone, or Taylor Richards, who has been associated with QPR.
In the first 45, goaltender Jason Steele had a back three of Odel Offiah, Lewis Dunk and Matt Clarke from the right.
Solly March (right) and Marc Cucurella were full-backs.
Adam Lallana patrolled deep in midfield with Michal Karbownik on his left and Jensen Weir on his right.
Karbownik is better known as a full-back but has made it clear he prefers a midfield role.
Julio Enciso worked on Danny Welbeck, with the Paraguayan sometimes going deep to get the ball.
Kjell Scherpen took over at the break with his back three in goal, from right Joel Veltman, Jan Paul van Hecke and Adam Webster.
Tariq Lamptey was lively at right-back and Andi Zeqiri often went wide on the left.
Steven Alzate anchored the midfield with Pascal Gross and Kacper Kozlowski (later Teddy Jenks) at his sides.
Deniz Undav and Neal Maupay were more of a classic Front Two.
Marc Leonard remained unused on the bench.
Potter should check on Kozlowski and say, “I think he felt something in his quad.”
Jeremy Sarmiento did not play as he continues to recover from hamstring problems.
Potter said: “He’s been training too, but we just didn’t want to put him in that phase at the time, but he’ll be coming to Portugal with us, so he’s back and available.”
https://www.theargus.co.uk/sport/20269407.brighton-shaped-union-st-gilloise/?ref=rss How Brighton fared against Union St-Gilloise