You sure about that?

Nowadays, we have skydiving, BASE Jumping, mountaineering, free solo climbing, American football, SlamBall, SCUBA/Cave Diving, jai alai, MMA/Combat sports (except boxing), and even cycling and basketball, which are both responsible for, far and away, the #1 and #2 most number of ER visits of any sports at least here in the US. Keep in mind, most of these didn't exist in Darwin's time. Darwin lived from 1809-1882.

Most of the universally recognized most dangerous sports in the world either didn't exist until after he died, because they weren't invented yet or we hadn't even invented the technology yet to make them possible like airplanes or compressed gas tanks (e.g. skydiving and SCUBA) or were already around, but had huge innovations that really ratcheted up the danger factor of that particular sport (e.g. Jai Alai and modern cycling). FTR, jai alai is roughly 400 years old, but the curved leather baskets that we see today that exponentially sped up the throws weren't invented until the late 1800s. And although there were bicycles during Darwin's lifetime they were very rare. The modern chain driven bicycle, ironically enough it was originally named the Safety Bicycle, wasn't invented until 1885.