Arizona Diamondbacks All-Star Ketel Marte is going on the restricted list for personal reasons, and the D-backs have signed free agent Sergio Alcantara two weeks after he was designated for assignment by the San Francisco Giants, manager Torey Lovullo told Burns & Gambo on Arizona Sports 98.7. The D-backs also recalled catcher Adrian Del Castillo and selected the contract of right-handed relief pitcher Trevor Richards.