Beede was placed on the 7-day minor-league injured list for an undisclosed reason Thursday, Susan Slusser of the San Francisco Chronicle reports.
The Giants are in need of a starter for Saturday's game after Johnny Cueto (elbow) was placed on the 10-day IL on Wednesday, but Beede won't be an option due to his own injury. The 28-year-old had posted a 6.92 ERA and 2.08 WHIP in 13 innings across four starts since he returned to the minors, and it's not yet clear when he could return to action.