Abstract: A sole structure includes a midsole having a lateral side defining a lateral edge and a medial side defining a medial edge. The midsole includes a first zone extending from the lateral edge toward the medial side and having a substantially uniform thickness, and a second zone extending from the medial edge toward the first zone and having a tapered thickness that decreases toward the medial edge. A resilient cushioning member extends across a portion of both the first zone and the second zone of the midsole in at least a forefoot region of the sole structure. The resilient cushioning member is substantially inset within the midsole in the first zone, it protrudes increasingly from the midsole in the second zone as the tapered thickness decreases toward the medial side, and maintains a substantially planar configuration when unloaded and permits controlled medial deformation when laterally loaded.