Swindon snatched a 1-1 draw at promotion rivals Cambridge courtesy of Joel McGregor's goal in the 90th minute.
The Robins had been second best throughout and trailed through Ben Knight's effort, only for McGregor to be fed by fellow substitute Billy Bodin and fire a precise first-time finish into the far corner.
Cambridge Take Charge
The hosts had dominated the chances prior to that late twist, with Adam Mayor firing into the side-netting early on as Cambridge set the early tempo.