Anderson threw about 10-15 pitches on flat ground after long-tossing from 120 feet. He will throw a couple more flat-ground sessions this week, and said he should resume throwing from a mound by some time next week. He had been working out Oakland's facility in Arizona before joining the A's on Tuesday.
"It's another step in the right direction," Anderson said. "You never want to get shut down, but [it's good] to get back to throwing, get back to throwing in a pitching motion, kind of feel like a pitcher again. It's good to be around your teammates and kind of be around baseball again, rather than 110 degrees in Arizona. It's good to be around this level of baseball and feel like you're participating again."
The left-hander had been far ahead of his rehab schedule before being shut down in May, which helped mitigate Anderson's frustration with the setback. He said he hopes to make at least a few starts for Oakland this season, something which seems likely given it's almost been a year since his July 14 surgery.
"It's kind of important for him to get back with us at some point," A's manager Bob Melvin said. "It's not something we're going to push, he's pretty important, but I think based on where he is, there's a decent chance he will be back at some point in time this year."
Anderson also has lost about 20 pounds from his playing weight last season, currently coming in at around 220-225 pounds after working out in his time away from the team.