For as bad as the Mariners have been on the field this year, the situation hasn't been much prettier in the minor leagues, where most of the club's top prospects have struggled or regressed in 2015. D.J. Peterson has a .290 OBP and six homers in Double-A. Alex Jackson posted a 38 wRC+ in Low-A Clinton before a shoulder injury gave the Mariners a convenient opportunity to drop him down to short season ball. Austin Wilson is running a .580 OPS in the California League. John Hicks isn't hitting. Gabe Guerrero wasn't either and now he's in the Diamondbacks system.
Minor League Update: 2015's Success Stories
