Medial collateral ligament injuries in overhead athletes typically occur due to a chronic repetitive valgus strain of the elbow, and rarely happen due to an acute trauma. The injury is chracterized by medial elbow pain, instability, and decreased throwing velocity. Moving valgus stress test and milking maneuvers are useful for the diagnosis. The initial treatment regimen includes rehabilitation programs following 1 to 2-week of elbow immobilization. When non-operative treatment fails, reconstruction of the ligament is the gold standard. Primary repair of the ligament is a viable option as an alternative to reconstruction in well-selected patients. The most commonly prefferred reconstruction techniques are Jobe`s and docking techniques, and their modifications. No single technique has a proven clinical superiority against to the others. Return to the sport rate is more than %80s with proper management however, return to the competitive level may take more than 1 to 1,5 years.