Potter fielded two separate XIs in each half but neither were able to force a goal in a match played behind closed doors at the American Express Elite Football Performance Centre.
Potter, who guided Albion to ninth in the Premier League last season, said“It was a good exercise for us. It was a case of getting players time on the pitch at this stage of pre-season and building relationships and we did that
“We had a couple of mixed teams out there, but I thought the attitude of all the players was fantastic.
New arrival Julio Enciso played the first 45 minutes, and Deniz Undav, the striker who spent last season on loan with Union also featured.
Potter added: “Julio and Deniz looked sharp, they both had a positive impact on the game.
"They have only been with their new team-mates for a few training sessions.”

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Brighton midfielder Jensen Weir played for the first 45 minutes of their pre-season friendly Photo: BHAFC

. LEICESTER, Jason Steele - GK
In goal for the first 45 minutes and will be a back-up once more this season for Rob Sanchez and Kjel Scherpen Photo: Shaun Botterill

. Matt Clarke - D
On loan last season at West Brom and will want to impress in pre-season and push for role this season with Albion and Graham Potter Photo: Tony Marshall

. Lewis Dunk - D
The Albion skipper was in preseason action for the first 45 minutes against Union SG. He will be vital for Potter's men once more this season Photo: Charlie Crowhurst

. Marc Cucurella - D
The Man City and Chelsea target played the first 45 minutes Photo: Charlie Crowhurst

. Odel Offiah - D
The young Brighton ace featured last season in the FA Cup at West Brom and will hope to make more first team appearances this campaign Photo: OLI SCARFF

. Mikel Karbownik - M
The talented young Pole had a tough loan last season due to injury and will be out to make a big impression this campaign Photo: Alex Pantling

. Solly March - M
The Brighton ace finished the season well and will look for a strong start to this new season Photo: Steve Bardens

9. Jensen Weir - M
Albion's talented teenager will hoping for a breakthrough season Photo: David Price

10. Julio Enciso - A
Paraguay international teenager Enciso enjoyed 45 minutes following his £8.5m summer arrival Photo: NORBERTO DUARTE

11. Danny Welbeck - A
Welbeck's hamstring issues look behind him and has returned for pre-season fit and firing and played the first 45 against Union Photo: Charlie Crowhurst

12. Kjell Scherpen - GK
Played the second 45 against Union and will look to challenge Rob Sanchez this season for the No 1 jersey Photo: Alex Burstow