Havlin partnered John Gosden's son of Tapit to Listed success at the Surrey track in November and the 45-year-old, currently sidelined with a broken collarbone and fractured rib, expects him take the step up to Group Three level in his stride for the mile-and-a-quarter prize on Saturday week.
The George Strawbridge-owned colt followed up his victory under Havlin when reunited with Frankie Dettori for the first time since winning last year's Cambridgeshire when winning the Winter Derby Trial in facile fashion earlier this month.
WISSAHICKON wins the (listed) Winter Derby Trial at @LingfieldPark!— Timeform Live (@TimeformLive) February 2, 2019
Looked to be in a bit of trouble turning for home but he surged to the front under a super-confident @FrankieDettori ride!
Havlin said: "If he turns up and gets the luck in running, he is just a class above everything else that is running at the moment.
"He is really relaxed. When I rode him in the Quebec Stakes they went no real gallop, but he relaxed lovely and he picked up well.
"It doesn't matter if they go slow or quick as he has got that great turn of foot. He is the best horse in the Winter Derby."
Looking further ahead, Havlin believes there could be plenty of big days for stablemate Dubai Warrior, who is as short as 14-1 for the Investec Derby at Epsom.
The son of Dansili made a big impression when making a winning debut under Havlin at Chelmsford back in November.
Nice debutant here for Rab Havlin and John Gosden - the imposing Dubai Warrior is bred to be decent and the Dansili colt bounds to the front and wins as he likes first-time up at @ChelmsfordCRC: pic.twitter.com/0frFI2sCQ7— At The Races (@AtTheRaces) November 8, 2018
He added: "Dubai Warrior is a big, imposing horse, but he is a gentle giant. Obviously he has got to improve on what he has done, but he looks to be pretty exciting.
"He is a big frame of a horse, but when he muscles up and strengthens up into it, he will be exciting. I couldn't pull him up at Chelmsford after the race so I let him go round.
"The good thing now is he could run in another race with a penalty. I'm sure John will see how he is doing in the spring and go from there."