But it was Natzke who stole the show for the weekend with his clean sweep of wins.
Natzke qualified his Kawasaki KX250F fastest early on Sunday, then raced to the first of his five MX2 race wins, crossing the line half a second ahead of Mangakino's 2020 national MX2 champion, Maximus Purvis.
But, close as that was, Natzke was just warming up. He won the next race by more than three seconds from Purvis and set the tone for a dominance not often seen in this most frantic of bike classes.
For race three, Natzke crossed the finish line more than 14 seconds ahead of Tauranga's former MX2 world champion, Ben Townley.
Race four saw Natzke take the chequered flag by an impressive 15 seconds from Oparau's James Scott and the fifth and final race was another Natzke masterclass as he cleared out to win by nearly 25 seconds from runner-up Townley.
Natzke, who will turn 22 on January 1, was determined to put the event to good use in terms of his preparation for the nationals, although the unique Summercross format did mix things up somewhat.
"The first MX2 race was quite close, but that was a sprint race, only five laps (and took barely eight minutes), so not much chance really for me to break away," Natzke said.
"The second outing was a sprint race too and Max (Purvis) was my nearest challenger again, but I just focused on what I had to do and got the job done."
Clearly leading the points standings after four of the five races, the pressure was off for Natzke, so he chose to set a target for himself.
"Just for fun, I wanted to see how big a gap I could get over the others. That was my goal for race five. I even made a mistake and fell off in that last race, but managed to get up and get going again quickly, so kept my big lead intact."
Meanwhile, fellow Kawasaki rider Taylar Rampton, from Opunake, dominated the senior women's grade at Summercross, finishing the day unbeaten to win ahead of women's national champion Amie Roberts, of Hamilton, and Rotorua's Letitia Alabaster.