HAHAHA, great video, that really made my day. I know he prolly has a lot of fans, but I'm not one of them!!
I do have a quick question though, would tennis be good to use as HIIT? When done at a higher level, there are lots of sprints, quick stops, and overall body workout similar to jumping rope, or does competitive tennis burn too many calories too fast and start taking out lean tissue instead of just fat?