A's lefty Brett Anderson made his fourth rehab start on Sunday, giving up three runs on five hits, including one home run, with two walks and three strikeouts in 4 1/3 innings of work for Triple-A Sacramento. Anderson threw 70 pitches and is expected to increase that total to 90 in his next start with the River Cats. The team would like to see him throw 100 before deeming him ready to return to the A's rotation.
"Health is key with him, and he felt good after yesterday's outing," Melvin said.
Anderson has been out since last season following Tommy John surgery.
Outfielder Seth Smith, placed on the 15-day disabled list Friday with a strained left hamstring, has yet to resume baseball activities.