FIFA 11+
30–40% fewer injuriesA 15-exercise warm-up (running, balance and strength) developed by FIFA and the Oslo Sports Trauma Research Center. About 20 minutes before you play. It's the single best-studied way to lower injury and ACL risk, but only if you do it every session.
Nordic hamstring exercise
~50% fewer hamstring tearsAn eccentric hamstring exercise: kneel down and lower yourself forward slowly under control. Two short sets a couple of times a week roughly halves hamstring injuries. It's included as level 3 of the FIFA 11+.
Copenhagen adduction
~40% fewer groin problemsA side-plank adduction exercise for the groin and adductor muscles, developed with Aspetar. No equipment needed, just a partner or a bench to support the top leg. Especially useful if you make a lot of cuts and changes of direction.