Vosler was recalled by the Giants on Saturday.
Vosler hit well with the club throughout spring training but failed to make the team due to its plentiful infield depth. However, regulars such as Evan Longoria (hamstring), Donovan Solano (calf) and Brandon Crawford (quadriceps) are currently sidelined, leaving the team depleted. That will give Vosler the chance to make his major-league debut, and he should draw the majority of his work at second and third base.