Clayton Lewis pulled one back for the visitors late, but it was nothing more than consolation as they fell to their fifth consecutive loss to the start of the season.
WaiBOP United coach Peter Smith was upbeat about his side's start and pleased his players were beginning to implement lessons learned on the training pitch.
"We spoke about that - in the games Wanderers have played they've scored goals in the first 20 minutes and put teams under pressure ... obviously we got a dream start in the first few minutes with Sam scoring in the header was nice," he said.
Smith said it was vital the side picked up some points after back-to-back losses to start the season, and was pleased the local players had delivered in front of their home fans.
"We spoke about the need to win your home games. We really put emphasis on that and coming out today we had to get some points in the bag.
"It was good to see Sam get a goal and Jerahl could have had one early on. They were highly effective in the way we played. I think we are a different side to last year."