Miller (elbow) came away from throwing live batting practice Tuesday feeling good, and the Athletics are currently assessing the next step in his rehab, the team's official site reports.
Miller threw 15 pitches as he faced hitters for the first time since May 8. The Athletics remain optimistic that Miller, who showed plenty of promise with a 3.38 ERA, 0.98 WHIP and 9.3 K/9 across his first four big-league starts, will pitch again in the majors this season, but he's likely in store for a fairly lengthy rehab assignment first.