The Padres’ playoff positioning hinges on the health of their most durable position player. Manny Machado, who has started 140 games at third base this season, exited Monday’s contest against the Cubs with a leg ailment, as reported by Deadspin. For a club holding a narrow lead in the National League wild-card race, any interruption to Machado’s presence in the lineup introduces a variable that the Padres’ front office must monitor closely. The team’s initial characterization of the injury as “fine” provides an early, but incomplete, signal. Leg issues for a third baseman—who must generate torque on throws from the hot corner and plant explosively at the plate—tend to resurface even when initial assessments are benign. The Padres now face a waiting period that could redefine their approach to September roster management.