An article of footwear comprises a sole structure, and an upper. The upper includes a front section and a rear section, both secured to the sole structure. The front section is fixed to the sole structure at least partially forward of the rear section and includes a medial portion and a lateral portion that together define a foot-receiving cavity over the sole structure, and a foot entry opening of the foot-receiving cavity. A zipper is secured to the medial portion and to the lateral portion. The zipper includes a slider movable between a zipped position and an unzipped position forward of the zipped position. An anchor is secured to one of the front section or the sole structure forward of the zipped position of the slider, and a cord is engaged with the zipper and with the rear section of the upper, and routed through the anchor.