Momota stunned in Hong Kong Open semis

Son Wan-ho triumphed over Kento Momota 18-21, 21-16, 21-19 in an exhausting 89 minutes -- the longest match of the tournament so far.

Son Wan-ho will take on one of Kenta Nishimoto or Cheuk Yiu Lee in the Hong Kong Open final.   -  GETTY IMAGES

Top-ranked Kento Momota was sent packing from the Hong Kong Open Saturday after a stunning semifinal loss to South Korean Son Wan-ho.

Son triumphed 18-21, 21-16, 21-19 in an exhausting 89 minutes -- the longest match of the tournament so far -- after seeing off a late boost from the exhausted Japanese star in the decider.

Momota led through the first game but slipped for long enough for his opponent to level at 17-all after conceding six consecutive points.

He kept the edge after the interval before Son broke into the lead at 12-11 with a gravity-defying let after a tap at net.

Momota evened with a backhand after springing back from prone position after a stumble but couldn't stop the sixth seed from powering ahead.

Son led through most of the third game but Momota kept at his heels, drawing level five times before an agonising miss on match point.

Momota has been in searing form since his return to the sport after a gambling scandal saw him slapped with a 12 month ban.

But the 24-year-old has had a slow run through the Hong Kong tournament. He beat Chinese great Lin Dan in the first round but complained of burnout after his first three matches all went to three games.

Son, 30, is through to his first top-flight singles final since his win at the 2016 Korea Masters.

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