Technological advancements in sport have not only improved the safety of our players, but our experience as spectators. But sometimes it’s easy to forget how far we’ve come with these innovations. Did you know that concussion helmets only started being used by the NFL in 2012? Or that mlb.tv in 2002 paved the way for live streaming? Our friends over at bwin have produced this fascinating infographic which details pivotal moments in the history of US sporting innovations.