Los Angeles Dodgers ace Clayton Kershaw received an epidural injection for his sore lower back and will be placed on the 15-day disabled list, manager Dave Roberts said before Thursday's game in Milwaukee. ''Clayton yesterday got an epidural, so at this point we're going to put him on the disabled list,'' Robert said. Roberts did not know how long Kershaw is expected to be out, or who would make his scheduled start Friday at home against Colorado.