How has technology changed sport?

yes technology has changed sport, look at rugby for instance you now have the tv ref who helps the on pitch ref make decisions. Also look at tennis where they can now question weather a shot was in or out and they check with the computer ang give the point accordingly. Now they made robots to play pool against. it can make a shot evey time!!! Also tv has changed sport, sports have been changed to make them more entertaining for viewers for instance they have made the goals in football bigger so more people can score making it a more exiting game to watch, technology has changed sports in endless ways.