As a result he will make his debut in the 2020 PDC World Championship at the age of 17 making him one of the youngest in history to play in the event.
Afterwards he called it a dream come true and that he's over the moon and it's something he will make the most of and that if he plays his own game he believes he can beat anyone at the Alexandra Palace.
"It's a dream come true and I'm over the moon," said Barry. "I really enjoyed myself up there.
"Liam got ahead and had a lot of chances in the game but he didn't take them, and when I got my chances I took them and scraped over the line.
"The 106 to go five-all really turned it over, the crowd was on my side and it was an amazing feeling to win. Hearing the crowd singing my name gave me goosebumps."
"I'm in the JDC final already so it was a free shot," added Barry. "It's a dream when you're younger [to play in the World Championship] - you watch it every year and you think you'd love to be there so it's really special for me.
"It's a dream come true very early but I'm going to make the most of it and we'll see what I can do there. I'll try and enjoy it and I know that if I play my own game I can beat anyone."
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