BUFFALO — So you’re tired of the one-and-done phenomenon that has overtaken college basketball in recent years? You yearn for the days when players stuck around and exhausted every second of their eligibility?

Well, we have a team for you.

May we present the Richmond Spiders, owners not only of one of the sport’s coolest nicknames but a genuine safe haven for kids who want to squeeze, quite literally, every second out of their college careers that the law (and the NCAA) allows. They have six players who are in either their fifth or sixth year. They have three fourth-year seniors.

The Spiders are a team you can grow old with, because they’ve grown old together. And you have time to hop on the bandwagon, too, because the Spiders aren’t going anywhere. They upset Iowa, 67-63, at KeyBank Center, becoming the first 12-seed to upset a 5-seed in this NCAA Tournament.

“We think we can beat anybody,” one of the fifth-year seniors, Jacob Gilyard, said after scoring 24 points, including four do-or-die free throws in the final seconds as the champions of the Atlantic 10 ushered from the tournament the champs of the Big Ten. “This is why we came back.”

And came back. And came back again. And came back again.

In theory this was available to everyone thanks to the 2020-21 season, in which players were granted a bonus year of eligibility. The Spiders were already an old team that had learned to play well together. Two years ago they blossomed, winning 24 games and all but assured of a spot in the NCAA Tournament.

And, well, you know what happened next. Center Grant Golden, one of the golden-girl sixth-year seniors, was riding an escalator at his Brooklyn hotel, heading for practice, when the news arrived that the A-10 Tournament was being canceled. The next day the Spiders were on a bus heading to the airport when the news turned even grimmer.

No NCAA Tournament.

Season over.

“It was,” Golden said, “just a depressing series of events.”

Even when the sport returned last year, much of what had made the Spiders special was missing, despite an AP ranking that climbed as high as 19 in December. They fell to eighth in the A-10, lost their first tournament game to Duquesne, bowed out in the second round of the NIT. It looked like a moment had been lost, an opportunity squandered.

Except there was that bonus year …

Richmond coach Chris Mooney explained what was possible, if they wanted to take advantage of it. Some schools of similar status were absolutely pummeled, ransacked by the transfer portal. Richmond wasn’t. There are 20 players on the roster. Guys wanted to stay. And, honestly: who wouldn’t sign up for a bonus year of college?

“I think at first everybody was kind of like, ‘No, we’ve been here long enough,’ ” Gilyard said, laughing. “You know, you get guys saying they’ll come back if you come back and vice versa, but I think at the end of the day, it was a personal decision for everybody, but I think everybody — somebody else played a role in everybody’s decision.”

Thursday, all of that experience came to a wonderful climax. It was Iowa — led by its own sixth-year senior, Jordan Bohannon — who looked uncomfortable when the game entered its most important phases. The Hawkeyes actually ripped off an 11-0 run to turn a six-point Richmond lead into a five-point advantage for themselves; the Spiders responded immediately with their own 11-0 run. And never trailed again. And never once panicked.

Acting like they’ve been here before. Because they have. For Golden it was his 160th game — 160! — as a Spider. He wasn’t going to be overwhelmed. None of them were.

“We’re not done yet,” Gilyard said.

They weren’t done despite finishing sixth in the A-10 this year, requiring a four-wins-in-four-days parlor trick just to get in the NCAAs. They came from way back against Dayton. They came from down late to beat Davidson. And then Iowa could never quite put them away, paid a price for that. Gilyard has played 200 minutes in that five-game winning streak — hasn’t taken a second off.

Why should he? Why should any of them? They came back for this. And came back again. And came back some more. Now they make it to the weekend, with Providence up next. Providence should be warned: these guys like playing together. And have no intention of stopping any time soon.