Pivetta (forearm) will throw a live batting practice session this week, Annie Heilbrunn of The San Diego Union-Tribune reports.
It's a big step for Pivetta, who will face hitters for the first time since going down with a right flexor strain in mid-April. The veteran right-hander could be ready for rehab assignment if his live BP goes well, but he will require several rehab starts to get built back up before rejoining the Padres' rotation.