Joyce, who was placed on the disabled list Wednesday with a back injury, will undergo an MRI on Thursday, Susan Slusser of the San Francisco Chronicle reports.

EDGE Analysis

Joyce said that his back has been bothering him for more than a month, but it only recently became too bothersome to play through. Thursday's tests will hopefully shed some light on the severity of the issue and offer a possible timetable for his return. The first day Joyce is eligible for activation is June 16, while Mark Canha figures to benefit from increased playing time while the outfielder is sidelined.