Crabs teams and tournaments have been on a downward trajectory for a couple years now. The 2015s are their last great team in the system now, but the 2018s may be great eventually. The growth of the game spreads more talent around, but another reason is the relative value of the Crabs strategy of encouraging holdbacks has been widely adapted by other clubs. It's a lot harder to be bigger, stronger and faster every time when you're not always older.