No matter who you are or what you do in life, nerves ahead of your first day on the job are natural.

But knowing that isnโ€™t making things easier for late Blues call-up Jacob Saifiti ahead of his debut for NSW in Wednesdayโ€™s decider.

Though Saifiti was a late addition to Brad Fittlerโ€™s squad ahead of the all-important clash at Suncorp Stadium, the shorter wait-time hasnโ€™t helped to alleviate his anxiety ahead of the biggest game of his career to date.

โ€œThe nerves are starting. At the start of the week they werenโ€™t really there,โ€ the Newcastle Knights prop told AAP.

โ€œLast night I was in bed trying not to think about it, but the nerves were flowing.โ€

Some have criticised Saifitiโ€™s addition over two more experienced Origin props at the Knights in David Klemmer and Jacobโ€™s brother Daniel Saifiti. But Jacob has been in the extended squad since Game I, biding his time behind Payne Haas and Jordan McLean who are now ruled out with rib and hamstring injuries respectively.

โ€œMy time would have come here next year or the year after,โ€ Jacob said.

โ€œBut itโ€™s come earlier than everyone expected โ€“ probably (earlier) than I expected as well.โ€

โ€œItโ€™s not that I didnโ€™t think I would get here. Iโ€™ve realised the last couple of years Iโ€™ve had a chance. But to not even just play Origin, but to play a Game 3, a decider up here, itโ€™s still so surreal.โ€

Saifiti also confirmed that he would be starting off the bench in a role similar to the one he plays at Newcastle. This news confirmed Junior Paulo will be the Bluesโ€™ starting prop for the first time this series.

Meanwhile older brother Daniel is elated that the brother he debuted alongside at NRL level is getting his chance at state level.

โ€œI was the first person he called. He was breaking down,โ€ the slightly-older Saifiti told the Canberra Times.

โ€œWe had a little cry together about how far heโ€™s come and everything heโ€™s overcome. He deserves it.โ€