Seedy fiddling

Looking forward the Wimbledon draw later today. However I did get slightly grumpy yesterday when I saw the seedings. Do they really have to manipulate the rankings that much? It happens every year and I should've expected it, but there I was hatching my plans for Wimbledon triumph, carefully selecting players, and what does the LTA (or whoever is responsible for deciding the seeds) go and do? Fiddle with them, that's what they do and spoil my careful planning. I am not amused.