car racing. each year, people die during races. and i'm talking about pro racing. just last saturday, simonsen died during the le mans 24 hour race and a week before, a nascar driver died during a sprint car dirt race.
in 2011, dan wheldon died during the last indycar race of the season
Base jumping and similar sports are dangerous, I would say rugby league it tougher then union but neither the most dangerous.
In horseriding you regularly get fatal and life changing accidents and skiing is dangerous (especially for amateurs)
Well I know rugby is a pretty dangerous sport especially backyard its like football but without pads imagine getting hit like nfl players do without pads
Being a matador (bull fighter) or an MMA fight or judo a lot of people die practicing/doing judo still fun though
I would say motorcross or car racing, because it involves high speed and machinery.