Ryan, 60, announced on Monday that he will miss the start of Spring Training; there is no timetable for his return. In Ryan's absence, assistant general manager Rob Antony will work with Mike Radcliff, vice president of player personnel, and Wayne Krivsky, special assistant to the GM.
Cash Kruth is a reporter for MLB.com. Follow him on Twitter at @cashkruth. This story was not subject to the approval of Major League Baseball or its clubs.