The County Championship has introduced a mid-match substitution rule on a trial basis this season, allowing teams to replace players under defined circumstances. Yorkshire became one of the early ...

4-A. By Competition Committee; to allow League personnel to consult with on-field officials when considering disqualifications for both flagrant football acts and non-football acts without being ...

The National Basketball Players Association wants the 65-game rule to be modified or go away entirely. In a statement obtained by the Associated Press' Tim Reynolds on Tuesday, it cited Detroit ...

Cricket Australia has made a tweak to their injury substitution rule for the Sheffield Shield final but are understood to be delighted with how the trial has worked across the course of the season ...

Cricket Australia has made one minor adjustment to their injury substitution rule for the upcoming Sheffield Shield final. The modification follows a trial of the rule throughout the domestic season ...

👉 Learn how to find the derivative of a function using the chain rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable x.