After only 15 minutes, Tennessee Kinghorn finished off a neat move to give Roslyn the lead. Green Island bounced back within a minute when Henrique Viana set up Matt Brazier to equalise.
It looked as if there would be a bucketful of goals but despite lots of huffing and puffing, and considerable physical effort, passing moves broke down. Play was fragmented and in a sure sign of nerves - lots of possession was hoisted up the park, only for it come back by the same Route One path.
Mistakes in defence looked most likely to provide the sought-after goals, and both keepers spilled their share of the few shots that were on target, but Sunnyvale's goal nets remained intact.
Eventually, with both sides possibly thinking a draw was about fair, Max Johnston supplied big Matt Brazier with a chance - not an easy one either - but the big man spun and shot in one movement, and at last hit the Roslyn net for a worthy winner. Cody Robinson was Green Island's best.
At Memorial Park, in another keenly awaited game, the home side, Mosgiel started well, and both Regan Coldicott and Sam McAuley had clear chances but failed to beat Caversham keeper Liam Little.
However as the match progressed, the red machine fired up, and with young Ben Wade racing around on both wings, and criss-cross runs from Tore Waechter and Sam Collier, Mosgiel began to stuttering.
Caversham's midfield duo, Andrew Ridden and Jarad Grove began to dominate and an explosive burst forward by Ridden opened the scoring after 29 minutes, when he darted past Mosgiel's keeper Sean McDonald and slotted a well-taken goal.
Despite valiant efforts by Mosgiel, coach Malcolm Fleming's side scored regularly from then on, and registered an intimidating 5-0 win, that silenced the massed Plainsmen army. Caversham's scorers were Ridden and Ben Wade, who both got two, and Sam Collier.
Southland United enjoyed its trip to Dunedin and moved into fifth slot on the FPL table with a 6-2 win over bottom side, Northern, at Forrester Park.
In the early match, at the Caledonian ground Roslyn-Wakari's women's side set the trend with a 7-2 win over Varsity Premier women's side, and in the main game, Queenstown Rovers edged out the Varsity men 4-2, in an entertaining match that keeps Rovers in third place with 10 points from six matches.
Varsity coach Darren Hart said his side was just outmuscled and Rovers was a good side. Queenstown coach Jamie Whitmarsh was pleased with his side's commitment.
The goals came from FPL top-scorer Jan Kumar, who opened the scoring just before halftime, then Queenstown in a dominant spell, scored through Cohen Nash, Kumar, and the chunky futsal hit man Carlos Herrmann.
Varsity hit back with a couple of goals by Ben Horton, but they were too little too late and Varsity lost 4-2.
Dunedin Technical had the bye.
