I agree with all.... you need to look at why you keep injuring your quad and why it is so tight?? Often there is a weakness somewhere that means your quad is being overloaded to compensate. I'd focus on core strength training, quads stretching, and cross train meantime (swim cycle etc) Once you are able to run properly again I'd add some drills to your running that are sport specific such as sprinting, stop/start and change direction type drills so that you are rehabilitating your muscle to get used to these things before you play again....hopefully your phsyio can help you with all this. Get a good core strength programme as it's vital in any sport!!!