Petit will make a spot start on Saturday in place of Brandon Webb (shoulder), the Arizona Republic reports.
Spin:
For now, Webb is only expected to miss one start. Petit is expected to throw around 90 pitches on Saturday, while he's worth a look as a speculative pickup in deeper leagues on the off chance that Webb's shoulder stiffness evolves into a more serious problem.
Jones has been scratched from Wednesday's getaway day game against the Phillies with a bruised thumb, the Braves' official site reports.
Spin:
Jones will probably be back in the lineup for the Braves' home opener on Friday. "I've been dealing with it for a week or 10 days, and I'd like to have it behind me by Friday," said Jones. Jones played with a swollen thumb on Tuesday and hit a home run, so this injury doesn't sound serious. Still, any ailment to the oft-injured Jones merits close attention.