Hi Mike,
If you have really hurt that muscle, doing some deep tissue massage may help a lot. Remember to use massage oil, and press deeply over the site where the muscle turns into tendon and just before it attaches to the hip bone. With some luck, you may find point tenderness over a certain place, do trigger point there with some circling at the same time. Hope it helps
p.s. If it flares up again after sports, remember to ICE it as soon as possible!!