A new balance test was added to the NHL Combine in 2015, called the Y Balance Test. This test is a dynamic test performed in a single-leg stance that requires strength, flexibility, core control and proprioception. This is the latest in a series of balance and core stability type tests that they have trialed over the years. It looks like a pretty complex test to perform, but seems a good objective measure of balance. Previously they have used a balance board, single-leg squats and a Hex Agility test (like the like the hexagon test). See more about the Y Balance Test.