Fans love statistics about sport—sets of numbers that describe and summarize what is happening on the field. With developments in computer technology, global positioning systems, and the internet, the range and availability of sports statistics are growing at a rapid rate. In tennis majors, for example, an on-court statistician enters the result of every rally, whether the final shot was a forehand or backhand drive or volley, a winner, or forced or unforced error, and whether either or both players were at the net. Cumulative results are immediately available to spectators, the media, and the general population through the internet. Only a few years ago, the number of kicks marks and handballs each player obtained in an Australian Rules football match was provided in printed tables 2 days after the match. Now over 80 statistics are collected in real time and immediately available to coaches and the general public. The science of statistics can be used to add value, to make sense, to discern patterns, to separate random variation from underlying trends in these sports data.