"How economists are tackling sports injuries"

I've always thought that it would be worth it to pro sports teams to spend a lot of money trying to understand and prevent injuries. They do. Kinda:

If injury incidences and outcomes were blind luck, then there would be nothing to do except focus on treatment. But they clearly aren’t. The RFU’s success with hamstrings is just one example. Simon Kemp knows rugby will always be dangerous, but he hopes that better conditioning might even help players come through some of the collisions which tear anterior ­cruciate ligaments.

“How?” I ask.

“We don’t know yet,” he replies