Zych (shoulder) is unlikely to rejoin the Mariners until at least late June, Bob Dutton of The Tacoma News Tribune reports.
Zych is scheduled to begin throwing off a mound this week, but since he's been sidelined since early May with rotator cuff tendinitis, the rehab process will be fairly extensive. Once he demonstrates he's healthy, Zych should claim a meaningful setup role ahead of closer Steve Cishek.