Golf has recently thrown up issues which should have been settled years ago. Tennis laws need tidying up. The Let rule on service has always been daft.
Soccer in the UK still has an obviously stupid ruling regarding the Transfer Window.
We have matches starting at beginning of August and The Window closing at the end of August. This ridiculous administration causes many clubs great concern regarding which players they can rely on being around in September onward.
It affects team composition, team training and team coaching. New signings need time to settle, giving an unfair advantage to opposing teams. Already there is severe inequality due to lack of funds when buying players and paying wages.
The Transfer Window ruling in its current form is just a stupid idea made worse because each new season nothing is done to improve the situation.