There is needs to be watch on court İf ITF and ATP is seriously that eager to enforce this time rule. İf they dont put watch on a court they leave all the judgement to the umpires they can even cost you the match if they wanted.This kind of thing cant be left to selective judgement of umpires.İf they continue to enforce the rule that hardly with out putting an actual watch on court ı see this rule made for bad intentions to favour some players to another.You can even affect the result of the matches like this just like today match Nadal with Klizan.Umpire calling time violations in the most important points in the match. Put that damn watch on court for players and all spectators to see, İf this rule will be that strict.