The most interesting thing to me is that it appears that most of these bets are really just head-to-head between sparring courtsider: trying to control the bett

The most interesting thing to me is that it appears that most of these bets are really just head-to-head between sparring courtsider: trying to control the betting line through speed (and betting algorithms.) It's just a high-stakes game of SlapJack. "Often, courtsider-led betting syndicates will match up against each other, putting both the fast fingers at the tournament and their respective algorithms to a head-to-head test. It’s common for courtsiders to recognize one another from across the court at a match. At bigger tournaments, they may spot a dozen or more such familiar faces in the crowd. Brad Hutchins estimated that there have been as many as 50 courtsiders working simultaneously inside the main stadium at a Grand Slam; another thought the number could be nearly twice as high."