The 20-year-old  defeated the likes of current Scottish world champion Graeme Archer, Adelaide Endurance star Scott Thulborn and dual NSW bowler of the year Ray Pearse to earn his berth in Thursday's final.

He claimed his biggest scalp when it mattered most, recording a 21-19 victory over the current world champion Brett Wilkie in a two hours and 20 minute final.

"There's no way I thought I could even make the final, let alone win it,'' Wilson said.

"It's a great feeling."

Wilson was staring at defeat when Wilkie led 18-13, but the Bendigo product stuck to his guns.

"Brett only needed three more shots to win but I just kept at it, changed up a few things, and I started to play well,'' Wilson said.

"I played some longer ends and I got myself in front."

To make Nathan's effort even more remarkable his win came 12 months after older brother Aaron won the Australian Open crown.

"It's incredible, I don't think we'll see that again,'' Nathan said of the achievement. "Aaron gave me a few handy tips in the lead-up to the final. He told me just to keep doing the things I'd been doing in my earlier matches."

Nathan Wilson had little time to celebrate. On Saturday he hopes to lead Essendon to a finals berth in Premier Division pennant bowls.