Most people will tell you not to take anything at the moment. To be honest, I know that if I were you I'd begin with some GH or peptides (GHRP-2 or -6, possibly some cjc, etc.) and possibly consider a short cycle of test once the injury is fully recovered (when initial strength and weight goals are achieved).
Of course, as you are going to be tested at some point (I assume) it would be wise to stick to esterless or short-estered AAS (test prop, test suspension, and possibly, if you can get some, tren suspension would be good too) as longer esters generally hang around for a few months in terms of detection.
A basic cycle would be something like 50mg of test suspension twice daily for 4-6 weeks, and that along with peptides/GH would be very effective. PCT would be required though, and SERMs are also detectable - if you plan to compete tested in less than 3 months time, there is a risk.
You are still young, you are coming back from an injury (so have more potential to gain strength and speed quickly), and want to compete in a tested sport. You do not need AAS. It's your choice, but if you don't know what any of these things are or how they work, DO NOT use them.