While its sponsorship revenue may have slowed following a strong 2013 season, Major League Baseball is wrapping up 2014 on solid footing.Spending on MLB and its 30 teams is expected to total $695 million in 2014, up 4.8 percent from the previous year, according to the latest IEG estimates.While spending lags the 5.9 percent increase from 2012 to 2013—a year in which the league signed a three-year, reportedly $125 million deal with T-Mobile—the increase exceeds IEG’s projected 4...