The Tigers signed Cobb to a one-year, $15 million free agent contract during the offseason, but hip issues have kept him on the injured list since spring training. Now, his tenure with Detroit will come to an anticlimactic end without even a single pitch thrown, and the Tigers' $15 million investment will be a complete wash.Alex Cobb's emotional response to season-ending surgery puts Tigers fans in difficult spotEven though it didn't come as a total surprise, Cobb's announcement reignited Tigers fans' frustration that the team had signed him in the first place. For an organization that already didn't spend much during the offseason, $15 million could have gone a long way toward upgrading the roster in other ways. Tigers fans can certainly be frustrated with the outcome, but that frustration shouldn't be directed at Cobb. Could (and should) Scott Harris have invested that $15 million elsewhere?