Started as a joke on Reddit after Medvedev loss to Sinner during the Six Kings Slam and there were a few times where he tried smashing his racquet to no avail.
The racquets they currently make favour players like Alcaraz and Sinner when it comes to breaking them. Medvedev has a distinct disadvantage at breaking these racquets because of his body type. They even did medical tests on his muscles to see if he had room for improvement in power and explosiveness when trying to break a racquet, but it's not possible.