Braden, who was shut down from throwing at the beginning of April after experiencing soreness in his surgically repaired left shoulder, played catch for the first time since then, throwing from a distance of 60 feet.
Anderson, meanwhile, is scheduled to throw his first one-inning outing in a simulated game in Arizona, utilizing all of his pitches. The lefty, rehabbing from Tommy John surgery, has thrown up to 40 pitches in bullpen sessions but is not expected to surpass the 25-pitch mark Wednesday.
Anderson's return timetable remains the same, as the A's hope to reel him back into the rotation soon after the All-Star break. Braden's return is unknown.