The combatants in the last three grand finals, Southcity and Gundagai, played out a game worthy of being on the big stage at Anzac Park on Sunday.

Six points was the biggest margin throughout the game as the two heavyweights battled it out.

After a couple of lead changes, the Bulls went six points clear after Steven Tracey converted his second try with a sideline special with four minutes remaining but the Tigers weren't done with yet.

Instead they regained possession after a short kick off and then with the help of a penalty marched down field and levelled things when Joel Field crashed over under the posts and Luff converted.

With the sides playing five minutes each way, it was Southcity who struck the killer blow.

A mistake from Damian Willis on the restart of the second period of extra time, where he was ruled to have caught the ball and then put a foot over the sideline, gave the Bulls perfect position to start their attacking set.

Captain-coach Kyle McCarthy was the man for the task as he stepped through the line to score his second try of the game.

The Bulls then held out a desperate Tigers outfit to take a 26-20 win.

McCarthy was thrilled with the undermanned team's performance.

"It was hot, they rolled through the middle really well on us but we just kept turning up," McCarthy said.

"Four of our players either played a full game of football yesterday or today so the effort from them blokes to back up and the effort of all the blokes to keep turning up was great."

Gundagai opened the scoring after 14 minutes when Field forced his way over but Southcity were quick to hit back eight minutes later as Nathan Rose made an almost immediate impact after coming off the bench.

He sliced through the line to score before the Bulls went in front when McCarthy went over from dummy half.

The two sides went into the break locked at 10-all after Seb Cottam scored off a Tyron Gorman kick with six to play.

Gundagai went back in front with to play after a big defensive effort to drive Brody Tracey 10 metres backwards and into the Bulls on goal line before Willis scored from the following set.

However the Bulls had the answers as they scrambled their way to level things as Steven Tracey scored in the corner with 10 to play.

He couldn't convert but learnt from his first attempt to slot his second from almost the same spot to help set up the frenetic finish.

McCarthy was pleased it all paid off.

"I was going to fake for a drop goal but that I had better run as if I shanked it I would have looked like an absolute d***head," he said.

"I'm glad I didn't."

He also had his heart in his mouth when it looked like his kick to restart the second period of extra time was going wide.

Instead luck shined on the Bulls.

"I thought I had kicked it out and the full and had blew it but thank God he caught it instead of letting it go as I think it would have gone out of the full," McCarthy said.

"Someone is looking down on us."

Gundagai now has to regroup to face Tumut in the preliminary final at Harris Park on Saturday in order to set up a fourth straight grand final showdown with Southcity.

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