It is common to experience muscle soreness (DOMS) and fatigue when restarting sports. For immediate pain relief, you can use an over-the-counter NSAID like Ibuprofen or apply a topical diclofenac gel to your shoulders and legs. To boost stamina and aid muscle recovery, consider taking a daily B-complex vitamin for energy metabolism, Vitamin D3, and Magnesium to reduce muscle cramps. Hydrate well with electrolyte fluids during games, and consume adequate protein post-workout. Ensure you warm up properly and gradually build your stamina rather than overexerting. If pain persists, consult a physician.