The 27-year-old is the first and only Swede to become a world master of the popular card game.
"I'm probably shocked because I can't feel anything right now," Jacobson told US sports broadcaster ESPN after his win.
"This victory means so much to me."
He edged out the second placed Norwegian Felix Stephensen in the final round with three tens, while Stephensen only had a pair on nines.
Jacobson, who was born in Stockholm but lives in London, honed his game online when he found no one else wanted to play with him.
An emotional Jacobson after winning. Photo: TT
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