I find your first sentence confusing. I get that there is science that says returning to play before an injury has healed can lead to re injury, I’m not disputing that. My initial response to your quote was due to the fact you said he has been rushed back not once but twice. His first quad strain might have had nothing to do with his Achilles issues. Sprinting requires a HIGH degree of coordination between the involved muscle groups, the working muscles have to turn on and off to very high degrees very rapidly. He might have over strided causing excess stress on the hip flexor, perhaps his leg was hit while he flexing the hip straining the muscle. There could be any number of causes for a hip flexor when sprinting, that don’t involve being rushed back from injury or a lack of conditioning. Even athletes that are in peak form - track athletes at the Olympics/world championships fall victim to muscles strains. As I said in my first post, the forces put on the body during sprinting are extremely high
Regarding his re injury, Webster initially strained his quad/hip flexor in early Oct ( he was IRed on 10/9), and he was reactivated 10 weeks later. Doc would certainly know better than me as I’m on the performance side of the equation but 10 weeks seems appropriate for a grade 2 strain, however given that he re injured it perhaps it wasn’t completely healed