Quintana (thumb) is scheduled to throw a bullpen session Wednesday, Jordan Bastian of MLB.com reports.
Quintana has been recovering from a laceration on his left thumb that required surgery July 2. He'll throw off the mound Wednesday for the first time since the injury. While the southpaw should require several sessions to build himself back up to full strength, he appears to be on the right track. Barring any setbacks, Quintana could debut around the middle of August.