"Negative effect of static stretching restored when combined with a sport specific warm-up component"- Taylor et al, Journal of Science & Medicine in Sport '09.
Static stretch, then negate the neural inhibition caused by the static stretch with a dynamic warmup.
Save the static stretching for the recovery/restoration phase; you'll get more out of it. I know the so called "science" behind the "stretching a cold muscle is better" movement. They are treating muscle and fascia as it is a plastic or metal, and not the living biologic tissue that is.