Up until fairly recently on the BWF tour, like maybe 5 years ago, when a player broke their strings during a rally or changed their racquet, they usually asked their opponents to give them a couple of clears to test the new racquet string tension before play commenced. I don't see this happening anymore. Did the rules change? Is this considered time wasting? Does this still happen in regional/local level tournaments? Does anyone know?
Bwf statutes: 5.11. Delays and Suspension 5.11.1. The Umpire shall ensure that the players do not deliberately cause any delay in play (Law 16.4). Any unnecessary walk around the court between rallies and testing of replacement rackets on court, shall be prevented and if necessary, Law 16.7 shall be applied. Yes. Not allowed to test racket anymore.