Jayden Sullivan.

You only need to briefly watch Jayden Sullivan's SG Ball highlights to realise the diminutive halfback is blessed with a rare mix of speed, electric footwork, playmaking vision and laser-like kicking.

So highly rated is 18-year-old Sullivan that St George Illawarra have signed him until 2022.

And it's not just kids his age that Sullivan is dominating.

After leading the Illawarra Steelers to the SG Ball title this year, he handled the early step to the joint-venture club's Jersey Flegg under-20s side.

He was also a key cog in the South Coast Black Cockatoos side that won the men's Koori Knockout at Tuggerah on Monday despite his slender frame.

Sullivan's silky skills were evident over the four-day tournament but the way he bounced up after several questionable tackles was most impressive.

"I just like to play footy, really. The Knockout's tough - last year I had 12 stitches in my head," Sullivan told NRL.com.

With star five-eighth Gareth Widdop departing the Dragons, Sullivan is another halves option for coach Paul McGregor to consider alongside Ben Hunt and Corey Norman.

Parramatta rookie Dylan Brown, who debuted at 18, proved in 2019 that age is irrelevant if you're equipped to handle the top flight.

"[Making my NRL debut next year] is definitely a big goal of mine," Sullivan said.

"I want to give back to my dad [Jason]. My father is all I've really had."

Sullivan played with his old man at the Knockout, making memories that will no doubt be cherished forever.

"I love playing with my mob, the south coast boys. It's good to give back to the family," Sullivan said.

One man who understands the weight of expectation at the Dragons is forgotten hooker Craig Garvey, who was hyped as a future gun as he came through the ranks in the Red V.

The 26-year-old represented South Coast with Sullivan over the long weekend and noted the improvement in his game.

"He's a lot calmer this year, he's a bit bigger. I know they've got big raps on him at the Dragons," Garvey said.

"He's a big star - just got to let him grow into it and not let him get ahead of himself."

Jayden Sullivan on the move for the Dragons in Jersey Flegg.
Jayden Sullivan on the move for the Dragons in Jersey Flegg. ©Gregg Porteous/NRL Photos

Following on from the Koori Knockout success, Sullivan will soon be tearing into his first proper NRL pre-season.

Already being familiar with the squad will help his transition, having started training with the NRL players late this season.

"All the boys [are friendly]. My first day I went in there they were just all open arms," Sullivan said.

"Every single one of them came and talked to me."

Such was the whirlwind nature of his 2019 season that Sullivan joked that he'd almost forgotten taking out the SG Ball premiership in May.

"There's so much footy, I haven't stopped," he said.

"SG Ball was probably the highlight of my career so far. To get to captain it, even better."

Dragons fans will certainly hope Sullivan can bring his winning touch to the NRL level.