If all continues to progress as planned, Ziegler should be ready for Opening Day. Meanwhile, the team is still trying to determine whether Hudson, who has thrown just 2 2/3 Major League innings over the past 2 1/2 years due to a pair of Tommy John surgeries, would be better served being a starter or reliever this year.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.