Nice footage of the KO, and a few highlights:
https://www.stuff.co.nz/sport/combat-sports/119934420/joseph-parkers-second-take-on-his-knockout-that-looked-very-nice
https://www.stuff.co.nz/sport/combat-sports/119934420/joseph-parkers-second-take-on-his-knockout-that-looked-very-nice