Second Spectrum is a sports analytics company that became the National Basketball Association’s official optical tracking provider beginning with the 2017-18 season, under a multi-year partnership announced with the NBA and Sportradar. It installed a camera-based tracking system in every NBA arena to capture the position of all players and the ball throughout each game.
Where simpler systems just log coordinates, Second Spectrum applied machine learning to interpret the raw video: identifying which player is which, recognizing events like drives, screens, and paint touches, and smoothing noisy trajectories into clean spatial data. From that it derived advanced statistics - speed, distance, and measures of defensive impact - and powered enhanced data products for teams and broadcasts. The company was acquired by Genius Sports in 2021.
Second Spectrum’s NBA work, alongside the earlier SportVU system it succeeded, helped establish optical tracking plus machine understanding as the standard way to quantify a flowing, free-form team sport - the basketball analogue to baseball’s Statcast and football’s Next Gen Stats.