Association football was the next major sport to see the introduction of the shin guard. He referred to the shin guard as the "Heartbreaker". Later, more concrete, examples of the shin guard concept resurfaced in the Middle Ages. They need a heavier shin guard with extra ankle protection. Goalkeepers can wear a light shin guard with minimal protection. Forwards need a light shin guard with protection and ankle support. The shin guard was inspired by the concept of a greave. In doing so, Huckaby fell onto Jeter; his shin guard driving into Jeter's shoulder.