Spider vs. Yellowjacket

I just posted about some nature photography of flowering plants I took, but this one is not as serene as those pics. 

I was watching my son playing on his swing set, & saw that a jumping spider had pulled a yellowjacket wasp into a nook by its head.

It was in a crevice in the swing set, so I couldn't get too close. I got close enough to see that this little spider wasn't letting go of his prey, & the yellowjacket was finished. Hopefully my spider friend catches a lot more of those bastards.