A decisive sequence came in the third set, when Möregårdh was trailing 7–10 and had to save three set points against the world No. 15 from Japan.
The Swede turned the match around and won the set 14–12, converting his third set point.
Möregårdh eventually won 3–1, with set scores of 7–11, 11–9, 14–12 and 11–5. He is now through to the quarter-finals, where he will face either China’s Lin Shidong or South Korea’s An Jae-Hyun.
Möregårdh is the tournament’s reigning champion.
