In the last picture, Parker beautifully slips AJ's jab and delivers a punch of his own. Next step: be in position to continue throwing jabs once he slips a punch.
https://www.stuff.co.nz/sport/combat-sports/102804583/joseph-parker-arrives-back-in-new-zealand-ready-to-plot-comeback-to-the-top-of-world-boxing
https://www.stuff.co.nz/sport/combat-sports/102804583/joseph-parker-arrives-back-in-new-zealand-ready-to-plot-comeback-to-the-top-of-world-boxing