It won't be remembered as one of the classics, but Jamberoo clinched a finals berth with Saturday's 32-24 home victory over Port Kembla.
The Superoos will finish fourth or fifth, depending on results of this weekend's final round of the regular season.
"To make the semis after finishing second-last last year, it's really good for the club," Jamberoo captain-coach Matt Coelho said.
"We're in the semis in every grade, and for such a small club it's an awesome achievement."
Centre Tim Small bagged a hat-trick of tries for the Roos, and Luke Gilmore and Keiran Kellaway scored a try each.
Fullback Jarrod Schodde crossed for a try and kicked four goals.
Mark Simon was the standout for the Blacks with a hat-trick of tries.
Coelho said his side were not at their best against the wooden-spooners.
"There was a lot of times when that last pass didn't stick, but if a few of those last passes stick we score a lot more points," he said.
The Superoos are aiming to warm up for the post-season with a win over the Gorillas.
"It's vital to win next week to get that winning feeling going into the semi-finals. You never want to go in on a loss," Coelho said.
"Aaron Henry's the key with Warilla so we have to shut him down. They've got a lot of good players, but he's the go-to man."
Coelho rejected suggestions the Roos are not capable of being a finals force.
"Anyone in the top five can win on the day," he said.
"Anyone can beat anyone. It's probably the closest comp in a lot of years. If you don't turn up and play your best footy you get done. Warilla showed it by beating Gerringong last week.
"We're happy with our form. We took Gerringong down to the wire a few weeks ago and we were the better team for 60 minutes against Milton.
"We want to beat one of the top three before the finals. We gave the other two a run for their money, so we can beat Warilla."
In Saturday's other game Gerringong secured the minor premiership with a 40-16 triumph over Berry-Shoalhaven Heads at Michael Cronin Oval.
Meanwhile, Milton-Ulladulla beat Kiama 22-16 yesterday, Nowra-Bomaderry defeated Albion Park-Oak Flats 42-30, and Warilla accounted for Batemans Bay 38-14.