Rico Verhoeven believes he "only showed a few tools" against Oleksandr Usyk, promising to "be a surprise" for any rematch.
The Dutch kickboxer answered his critics in just his second pro bout as he pushed the unified heavyweight champion in Giza.
A late - and controversial - stoppage for Usyk ensured the Ukrainian retained his belts, but not without an almighty scare too.
Now, Verhoeven has suggested that there is still more to come as he plots another crack at Usyk following their first dance.
"This is just me opening the toolbox," he told Sky Sports News. "I showed a few. There are multiple ways we can fight Usyk.
"The next one, again, is going to be a surprise. I like to believe there is a world where maybe he wasn't at his best [in the ring].
"I was doing well, and those two things came together to make the fight look the way it did. I definitely hurt him in different spots.
"Especially to the body. [He was] not hurt to the point where I was close to getting him out of there, but the next day, he will have felt that."
Should Oleksandr Usyk have cause for concern if Rico Verhoeven suggests he has more ways to trip him up on the canvas?
The Ukrainian was far from his imperious best against the Dutchman last Saturday, leaving it late to get the job done in the end.
But with almost a dozen pro rounds against the best in the world under his belt, Verhoeven arguably will only offer more now.
Whether Usyk agrees to a rematch is another matter - especially with Agit Kabayel breathing down his neck for the WBC crown.
If so though, Verhoeven believes he has the means and the methods to reinvent himself further and cause him serious chaos.
'The Beauty' Tommy Fury fights the 'The Beast' Eddie Hall on a great Misfits fight night on Saturday, June 13, exclusively live on DAZN. Buy as a one-off PPV or included, along with Zayas vs. Ennis (June 27), Joshua vs. Prenga (July 25) and Canelo vs. M'billi (Sept 12) PPVs, with a DAZN Ultimate Tier subscription.