The 2023 world champion advanced with a 6-3 victory over Nathan Aspinall in the quarterfinals.
Smith and Aspinall, who are good friends and recently traveled to Las Vegas together, went into the night in fifth and fourth place, knowing that the winner of their match will advance to London’s O2 Arena on May 23.
That contest was tight at first, but it heated up in the seventh leg when Smith hit a stunning 136 to move ahead on throw.
The critical leg followed, with Smith breaking with a magnificent 132 checkout and then closing out for the victory.