An eccentrically lengthening brake driven model of hamstring function is widely accepted while it is also suggested a quasi-isometric contraction exists in which it is the ability to maintain isometric function that predisposes the hamstrings to injury (Yu et al 2017; Van Hooren and Bosch (2017). There is a debate surrounding both theories but what we do know is that late swing and early stance phase are the most hazardous for hamstring injury, where the hamstrings are most vulnerable and under the greatest stress (Liu et al., 2017). The strength of the muscle and its ability to withstand be it eccentric/isometric force in the late swing and the transition to early stance is surely the critical factor in protecting players.