I played, Football, baseball, Hockey, raced motorcycles, etc etc and never did the whole stretching routine............folks who stretched a lot that i played with, competed against etc all seemed to pull muscles, tear ligaments, cramp up etc one time or another .
I am 57 years old and ride a bicycle 150+ miles a week ( doing a 100 mile ride tomorrow ) and i never stretch out before a ride ........... I do use an inversion table which relieves back tightness and soreness very effectively, but i do not do the stretching routine . I played goal back in my hockey days, and never did the crazy stretching stuff you see netminder's do today, although in my day we played a different style of net minding . I guess stretching is good for some folks, i just thought it was a bit over done by many folks .