Featured image not working

Hi there I set the following featured image in a news post, but the site is showing the image that is in the body of the post as the featured image on the home page

https://www.pioneersportspress.com

E.G:

https://pioneersportspress.com/brad-pickett-announced-for-ufc-london/

Is showing the body image as the featured image rather than then one we have set here: https://pioneersportspress.com/wp-content/uploads/2015/12/CWMdJr-VAAA2ney-1-e1450183752130.jpg

Any ideas?