There's at least 3 ways to use PHP code to add featured images before and after single post titles & archives. There's code for use
Genesis Featured Image Tutorials
This archive contains tutorials which relate to the modification/addition of featured images in genesis child themes and other WordPress themes. The code is guaranteed to work as shown in the demo images and videos. Installation of all code as well as support for PHP code is provided for registered users. This archive does not contain all tutorials which relate to the use of featured images. To view all tutorials related to featured images, please use the search box with the keyword featured image.