Rich Oliveri remembers how frustrating it was to watch the head fakes and the hesitation moves work every time. To see St. John’s defenders duped into fouls and be unable to stay on their feet.

Now? Well, now he can’t get enough of Jalen Brunson’s basketball IQ.

“It’s nice to finally be on the positive side of that,” he said. “There are some bad memories obviously, but I think the fact that the Knicks haven’t had a point guard like him in so long, I’m hoping this is the end of that drought.”

The 35-year-old Oliveri is like many Knicks and St. John’s diehards The Post spoke to about the complexities of what it’s like to now root for Brunson, the guy who killed their favorite college team not so long ago. The overwhelming sentiment is it’s not so hard, considering how long the Knicks have waited for an in-his-prime point guard such as Brunson and how well he has performed, leading them to an 18-14 record and averaging 20.4 points and 6.3 assists while shooting 46.1 percent from the field.