PORTLAND Tigers and Portland Colts will do battle to determine who sits on top of the ladder with just one round to go, and in doing so give themselves the best chance at booking a ticket straight to the grand final at the end of the season.

Under a new A grade finals format introduced this season, the team that finishes on top of the ladder will earn a golden tickets straight into the grand final, while the teams that finish second and third will have to qualify via way of a knockout semi-final.