Sponsorship spending on Major League Baseball and the league’s 30 teams totaled $892 million in the 2017 season, a 7.9 percent increase from the previous year, according to ESP research.The increase easily beats the projected 4.1 percent increase in 2017 North American sponsorship spending and 4.3 percent increase in overall sports spending.The increase in spending is driven in part by new sponsorship inventory, including league championship series and other post-season assets. Partners in...