Cold rolling can significantly affect the mechanical response of amorphous glassy polymers. Traditionally, uniaxial compression tests are commonly used to evaluate the mechanical response of oriented polymers. In contrast, the tensile response of predeformed polymers is still not well characterized since the specimens typically do not exhibit a homogenous deformation in the subsequent reloading process. To address this limitation, in this work we first perform cold rolling on poly(ethylene terephthalate)-glycol (PETG), an amorphous glassy polymer, followed by a subsequent reloading test in uniaxial tension mode. (nhnhanh)