Professor Lucas Lepri demonstrates a systematic approach to passing the half guard by immediately countering the opponent's aggressive attempts to sit up, regain guard, or sweep. From the top position, Lucas utilizes strategic control of the opponent's collar and knee to close the distance and maintain heavy pressure. When the opponent tries to turn or sit up, Lucas quickly blocks the opponent's hips with his knee or arm and clubs their back, forcing them to remain flat or turn away. This positional control allows Lucas to bypass the opponent's defensive shields and execute a pass, often leading to a knee cut or a back taking opportunity.