The NRL's biggest names typically define finals football.

When you think of the finals game breakers, you immediately look at players like James Tedesco, Nathan Cleary and Isaiya Katoa.

But in truth, finals are decided by the players who have been consistent all year, get the job done when it matters and free up the space for the stars to go to work.

Here is the player from each team who will determine exactly how the next month of footy plays out.

South Sydney Rabbitohs: Tallis Duncan

Tallis Duncan has had a breakout season for the South Sydney Rabbitohs and has carved their finals campaign through his power and efforts. Through his 20 appearances, Duncan has scored 10 tries, 16 line breaks, 8 try assists and 10 line-break assists.

Traditionally as a second-rower, these statistics prove to be a significant attacking contribution for the Bunnies. Duncan has been playing in the centres for the side when players are injured; he is extremely versatile and adapts his game when needed.

Duncan runs hard and gains significant metres throughout a game, whilst also creating try-scoring opportunities for teammates around him. Throughout their Round 9 clash against the Melbourne Storm, Duncan scored a hat-trick, proving his attacking capabilities.

Since last year, Duncan has significantly improved and was in talks for the Origin series this year. With attacking threats across the field, the return of Latrell Mitchell moves Duncan back to the second row. This creates extended opportunity for South Sydney to attack through the middle with a fast and fit forward.

Through their finals campaign, Tallis Duncan will prove to be invaluable for the side and push their chances of lifting the trophy significantly.