Kelly Gruber is a Baseball-Player, currently playing for . Kelly Gruber was born in in . There are currently 220 Cards of Kelly Gruber in our Database including 1 rookie Cards and 200 variations Cards. The most valuable Card of Kelly Gruber is currently 1990 Donruss #12 Kelly Gruber by Donruss from 1990 with a worth of approx. $1.79.