San Francisco Frontiers - Top-ranked Viktor Axelsen out of badminton's Thailand Open

It means the top two seeds are out after the early exit of the out-of-sorts former world champion Kento Momota, who slumped out in the first round on Wednesday.

"After slipping on the courts last week during Thomas Cup, I suffered a minor injury which I have been dealing with the last 7-8 days," the 28-year-old Dane said on Twitter.

"After my match yesterday it has gotten worse and therefore I have decided to pull out from the Thailand Open and get 100 percent again."

Thailand hosted the Thomas and Uber Cup Finals at Bangkok's Impact Arena last week and several players slipped during matches, raising concerns about courts not being properly mopped.

Axelsen and his Chinese opponent Lu Guangzu both took tumbles in the early stages of their first game last Wednesday.

The Tokyo Olympic gold medallist appeared to injure his ankle on the second point and was seen grimacing, but was able to continue.

"The floor was really slippery. I'm pretty frustrated with the court," Axelsen said after the match.

Japan's Momota was stunned 21-2, 21-11 in just 29 minutes by 36th-ranked Zhao Junpeng of China on Wednesday.

Momota has suffered poor form since returning from a career-threatening car crash in January 2020. He also had a shock first-round exit at last month's Asia Championships in Manila.

K.Hernandez--SFF