The 50-over game has had constant tweaks to its format in a bid to remain popular, but Elworthy insists there is room for two short versions of the game.Despite the tournament taking place a month before the Ashes, Elworthy is optimistic the matches will attract good attendances. The former South Africa all-rounder said:We have seen increases year on year in terms of one-day attendances and the Champions Trophy has highlighted that.It does attract the other nations. The Ashes of course is a huge event in itself, but the Sri Lankans, Pakistan, West Indies fans are drawn. Those supporters are very passionate and will come out in their thousands to support their team.We need to settle and let it to be. We need to let changes bed down for a while.The Champions Trophy began life in 1998 as the ICC Knock Out Tournament and was played every two years until 2008, when security fears in host nation Pakistan resulted in competition being staged in South Africa a year later.Changing it too many times - it does create some confusion.With the inaugural World Twenty20 taking place in 2007 and the International Cricket Council hoping to stage a 2013 World Test Championship, it was thought that the 2009 Champions Trophy would be the last.The current format with the powerplays are working, it is about getting the right balance between bat and ball.