"Everything felt really good again," Gray said, "so it was another good, productive day for me."
It was Gray's second bullpen session since being shut down more than a month ago. It hasn't yet been decided if he'll need another before advancing to facing hitters. A's manager Bob Melvin said either scenario is possible.
The latter would put him one step closer to a Minor League rehab assignment.
"He feels great," Melvin said. "We're going to sit down and talk about what's next for him, but he's on a good pace."
The A's remain hopeful of having their ace back in their rotation by the end of the month. To this point, Gray remains on track.
"I felt really good the day after my last bullpen session, I felt good yesterday, I feel good today," Gray said, "and I threw the ball with a lot of intent, a lot of effort in today's bullpen."
Jane Lee has covered the A's for MLB.com since 2010. This story was not subject to the approval of Major League Baseball or its clubs.