Bright sunlight, lots of contrast in skin and sky and clothing. My intent, though, was to play up the texture of his beard and the skin of his tatooed arms.
Most HDR people will tell you that an action shot is not a "real" HDR. Here's what I do:
I shoot in raw, so that my image will have about 9 stops of latitude. Then, I use a program that can handle raw files, and convert them in three to seven different stops of exposure. Then I just run them through Luminance (a freeware HDR product). Luminance is extremely flexible, but not all that user-friendly. There are various other HDR products that are easier.
Or if you just want to take a look at some of the things that can be done, you might want to download AutoHDR. It's freeware, and extremely easy to use, although not very flexible. Find it here:
AutoHDR - One-click HDR Imaging from single photos
Check out the gallery. Not too bad. I use it from time to time, and it never disappoints. If you like it, make a donation. Oh, and when you can, it's still best to take multiple exposures. Even 9 stops (which is what my K20d can do) is sometimes not enough.