Detroit made the moves Sunday before playing the New York Mets. The Tigers used seven pitchers Saturday in a 5-4 loss in 13 innings.
The 24-year-old Soto is 0-2 with an 11.20 ERA in four starts since making his major league debut this season. He pitched Friday night at Citi Field and starred at the plate, going 2 for 2 in his first competitive at-bats since he was a teenager -- he singled twice on fastballs from Noah Syndergaard.
Tigers manager Ron Gardenhire said he expects Soto will make one start in the minors and then return to Detroit.
The 25-year-old Hall was 0-0 with a 14.63 ERA in five relief appearances as a major leaguer, all with the Tigers last season.