11.   The latest rule change designed to open up the game and increase scoring borders on gimmick.

12.   The National Hockey League has enlisted the help of the International and American Hockey Leagues to conduct experimental rules changes designed to add to goal scoring in hockey.

13.   The two spectacular accidents at the end of the race were inevitable, NASCAR drivers said, because of rules changes designed to tighten competition.

14.   When the cars enter service, sharp-eyed passengers may notice changes designed to make the train safer in a crash.

15.   There are several rules changes designed to improve the flow of the game, the most noticeable of which will be a ban on forearm checking.