The doom-mongers who predicted the end of tennis as a sport of global interest when Roger, Serena and Rafa finally leave the stage, have been proved to be wildly over pessimistic given events at the US Open over the past week or so. It’s been one of the most enthralling, captivating and slightly bewildering Grand Slams for a long while, and we reach the quarter final stage, with perhaps even more surprisingly from a British perspective, the prospect of a new genuine star of the game coming from these shores.