Play was suspended before a match could even get underway at the Swiss Indoors after fog filled the court.
Ben Shelton and Andrey Rublev completed their warm-up but couldn't start their quarter-final because of the bizarre interruption.
The American attempted to clear the mist with his towel but there was an eight-minute wait to get things started.
MORE TO FOLLOW
We'll be bringing you the very latest updates, pictures and video on this breaking news story.
For the latest news and breaking news visit: . Stay up to date with all the big headlines, pictures, analysis, opinion and video on the stories that matter to you.
Follow us on Twitter @dexpress_sport - the official Daily Express & Twitter account - providing real news in real time.
We're also on Facebook @dailyexpresssport - offering your must-see news, features, videos and pictures throughout the day to like, comment and share from the Daily Express, Sunday Express and .
You may also like
Farooq Abdullah Calls for Peace with Pakistan After Deadly Gulmarg Attack
Swiss Indoors tie suspended due to fog as star uses towel to clear the air
BREAKING: Missing X Factor star Levi Davis' disappearance case still has 'no new leads', say police in update
Laundry expert confirms how often you must wash your bedding
Gyanvapi case: Varanasi court dismisses plea for additional ASI survey