Eubanks on Mensik's doping test in the middle of a match: "There was certainly a misunderstanding".

The sequence caused quite a stir at the Next Gen Masters on Thursday: during a short toilet break, Jakub Mensik was asked to take a doping test while his match against Arthur Fils was still in progress.

On his return to the court, the world No. 48 was understandably angry at this unexpected situation.

Chris Eubanks, 107th in the world and also a consultant for Tennis Channel, mentioned a probable error by the person in charge of the test: "I think it was due to someone who didn't know the rules very well. Mensik was probably supposed to have a test after the match.

That's what normally happens after a match. There must have been a misunderstanding when he entered the dressing room.

The person in charge didn't understand that the match wasn't over.

After some tough defeats, I've had to deal with identical situations several times.

When you see someone standing there with a clipboard, you know who you're dealing with and what they want.

It's always different people helping the anti-doping authorities. They have to keep an eye on you all the time after a match."