Greaves will get the starting nod at home versus Detroit in Monday's preseason matchup, Aaron Portzline of The Athletic reports.
In addition to starting the first preseason game, Greaves is scheduled to be in the crease for the last one versus Detroit on Saturday while Cam Talbot starts the other two preseason contests. With Elvis Merzlikins (shoulder) on the shelf, the 25-year-old Greaves likely has the inside track on the No. 1 job, though he is far from secure in that spot.