Abstract: An article of footwear includes a footwear upper and a sole assembly secured to the footwear upper. The sole assembly has a heelward portion and a toeward portion, and includes a deck assembly disposed substantially in the heelward portion of the sole assembly. The deck assembly includes an upper deck portion, a lower deck portion spaced from the upper deck portion, and right and left supports attached to respective right and left portions of the upper and lower deck portions substantially near respective right and left lateral edges of the upper and lower deck portions. The deck assembly defines a cavity between the upper and lower decks. The deck assembly directs translation of ground contact forces incurred by the heelward portion of the sole assembly at least partially laterally outwardly.