Like a top prospect hitting his way into the big league line-up, Baseball Prospectus's mid-season update arrives as all killer and no filler content just in time for the final push. THE CALL-UP highlights the most interesting players from the first half of the season--underperformers, overperformers, and rookies--to examine who got worse, who got better, and who just got lucky. It also updates the top prospects list with new commentary and includes ten of the most interesting and popular articles that have appeared on their subscription website since the last season ended. That includes Russell Carleton on what predicts baseball injuries, Sam Miller on the effects of having a terrible farm system, and Eric Knott (an 11 year minor-league pitcher with 24 major-league innings) on the price he may have paid for never doing performance enhancing drugs. Whether you're a die-hard stat-head hungry for first division insight, or a diamond enthusiast who finds the phone-book size annual a little daunting, THE CALL-UP is projected to be worth at least two wins over whatever it's replacing on your ebook device down the stretch.