Oller (ribs) is slated to throw a bullpen session Friday, the Associated Press reports.
Oller began a throwing progression Tuesday, and he's apparently ready to throw off a mound Friday as his next step. Manager Mark Kotsay noted the right-hander will be "on track to be ready to go if everything goes well", seemingly giving Oller, who's already eligible for activation from the IL, a chance to return before the end of the regular season.