The Atlanta Braves have optioned relievers Chris Withrow and Matt Marksberry to Triple-A Gwinnett according to a report by MLB.com's Mark Bowman.
— Mark Bowman (@mlbbowman) March 14, 2016
Marksberry was also optioned. Krol and Alex Torres remain the top LH relief candidates. #Braves
— Mark Bowman (@mlbbowman) March 14, 2016
Withrow had pitched reasonably well this spring allowing one earned run over 2.1 innings. He had struggled a bit with his control and that will likely be the focus for him while he's with Gwinnett.