After making my first attempt at matching the lighting, I made some adjustments and set up my render layers so I could bring everything into Nuke and comp my final image. I had to look back at old notes to jog my memory, but everything quickly came back to me once I got started. I broke the image out into direct light and fill light, and then direct shadow and occlusion show. Each pass is shown below, along with the final comp.
Overall I think I am getting there, but there still needs to be some tweaking. I think the shadow on the ball is still a bit harsh. Also the shadow on the ground needs to sharper.
Here is a comparison of my reference image to my match.