European Tour chief executive Keith Pelley insists golf must embrace new formats and plans to have six-hole events on the professional circuit as early as next year.The Canadian, who succeeded George OGrady last year, has been keen to modernise the game and has already permitted players to wear shorts in pro-ams and introduced measures aimed at tackling slow play.However, Pelleys announcement that six-hole sprint formats could be included on the European Tour schedule from 2017 is a significant leap.Golf and tennis has to be a little more open to letting the youth actually participate, Pelley told BBC Radio 5Live. Theres no question that is something we believe in as well.You look at some of the new formats that have been created -- when you look at adventure golf, or the brand Top Golf, and theres one 15 minutes from where I live in Virginia Water. Its really geared towards millennials, so the way that people are participating in the game is completely different.Lets be honest -- and scientific data proves this -- attention spans are decreasing as opposed to increasing and its completely different when the choice people have to consume content now is so different than it was 35-40 years ago.So you have to change, peoples time is so precious that golf -- I think every golf course being built needs to be six holes, six holes, six holes - so that people can go at the beginning before they go to work.Pelley highlighted the success of Twenty20 cricket in boosting attendances as a reason for change.From our perspective, as the gatekeepers of the professional game, we are looking to create a format that would be six holes.That could be an hour, an hour-and-a-half content programme which would be very entertaining, added Pelley, who said that if golf were invented today it would likely be a 12-hole rather than 18-hole sport.Yes there would be a shot clock, yes there would be music being played, and PA announcements, and players would be dressed a little differently, and maybe they would only play with five or seven clubs.Our leaderboard is always filled with a bunch of different flags and it would probably be a country competition, so you could probably see England playing Scotland in a six-hole matchplay with time clocks and music and so forth going on and it would be an aspirational goal to be even remotely as successful as Twenty20 cricket.If youre not prepared to change, i