Hammers won 3-1, with El Hadji Malick Diouf making his debut.
Potter said of their new wing-back: "I thought El Hadji Malick Diouf did well.
"You can see what he brings to the team. He attacked the back line a lot and got in some good crossing positions.
"He looked dangerous and played with enthusiasm. He's only been with us a few days, but the first signs are really positive."
Goals from Andy Irving, Callum Marshall and Lucas Paquetá saw the Hammers win their latest preseason friendly and Potter added, "It's always nice to win. That's what we play the game for, to win.
"We've had a good foundation, a good platform to go from. Now we need to push on, get some more minutes in the players, and then we're off to the States, so I'm looking forward to that.
"That's going to be a really good trip. We've had a fantastic week now, and it's given us a really good base. As I said, we have to push on again."