Following weeks of speculation, Houston Rockets guard James Harden has indeed left Nike to sign with adidas, inking a 13-year deal worth $200 million. The three-stripe brand announced the partnership today, which officially begins October 1. Harden will step to the fore of adidas' global brand campaign, coinciding with the start of the NBA season, and there will also be the requisite signature collection, comprising both on- and off-court footwear and apparel. Harden joins an impressive roster of NBA stars, including Derrick Rose, John Wall, Damian Lillard and Andrew Wiggins. adidas' fortunes can only go up with this latest high-profile signing. According to market retail tracking firm SportsScanInfo, adidas currently has less than a 3 percent share of U.S. basketball shoe sales, compared to Nike's more than 90 percent.