Bumgarner has been on the disabled list since hist dirt-biking accident on April 20 that left him with a separated shoulder and bruised ribs.
He threw a mound session on Wednesday, June 14. That was followed by a simulated game on Saturday where he threw around 40 pitches. The simulated game was supposed to be sooner, but there were some issues with gaining access to Coors Field for him to throw.
This is the first really big step in his recovery. Bumgarner will throw another simulated game on Wednesday, and then the Giants will re-evaluate his status, according to Andrew Baggarly of The Mercury News.