Acute coronary syndromes from coronary emboli are rare, but well described in the literature. Saphenous vein grafts (SVG), used in coronary artery bypass grafting surgery, are vessels prone to atherosclerotic occlusion and aneurysmal dilation. Descriptive cases of embolization of these atherosclerotic lesions are lacking. Aneurysmal dilation of SVG conduits provides an area of stagnated flow that can harbor thrombi with embolic potential. This case describes a patient with non-ST-segment myocardial infarction possibly resulting from SVG aneurysm thrombus embolism.