Gray (back) threw a 25-pitch bullpen session Tuesday and felt great afterwards, Jane Lee of MLB.com reports. He's scheduled for another bullpen session Friday.

Gray continues to battle back from the lat strain that has plagued him for the past several weeks. The exact timetable for his return has yet to be established, but Joe Stiglich reports that the A's are looking for their ace to throw off the mound at least two-to-three times before potentially facing live hitters. It sounds like the 27-year-old is still a few weeks away from making his major-league return.