Smith will receive a second opinion on his back injury, Martin Gallegos of MLB.com reports.
Smith was placed on the 10-day injured list by the A's on June 17 with a back strain, and the infielder remains without a timeline for a return. The second opinion from medical experts will likely go a long way towards determining when Smith is able to get back on the diamond, and there should be an update on his status in the coming days.