A’s Notes: Estes, Lopez, Harris, Newcomb

A’s right-hander Joey Estes has undergone surgery to address a herniated disc in his lower back, according to the MLB.com injury tracker. That obviously ends his season a month after he landed on the 15-day injured list. Estes had just been recalled from Triple-A Las Vegas a few days before suffering the injury. He tossed four scoreless innings out of the bullpen against the Mariners on August 24.
That’ll go down as Estes’ only MLB appearance since April. The 23-year-old o