As i was watching the Masters today, one of the biggest golf tournaments in the world, I was struck by how many players made the same mistake. On the 15th green, a severely sloped and long traverse, just about every player who was putting uphill (and all pros know it's better to putt uphill than downhill) came up short. I watched in amazement as over a dozen players made the same mistake, reading the green as faster than it actually was.The object of my surprise is not that these players misjudged the green.