An anonymous Connecticut fan bet $90,000 on his Huskies to beat favored Villanova in the second round of March Madness last weekend. The Huskies won, but the fan didn't collect his winning ticket for $228,431.17. No, he let the entire thing ride on UConn's Sweet 16 matchup against Iowa State, when the Huskies were again considerable underdogs.

But UConn upset Iowa State on Friday, 81-76. The bettor now sits on a total of about $480,000 — some $390,000 more than he started with. However, the situation raises an obvious question: Will he double down again when UConn plays Michigan State on Sunday to see just how long he can ride this Huskies hot streak?

The fan's bets were all made at the William Hill sports book inside the Hooters Hotel & Casino in Las Vegas (side note: America!). He first put down $28,000 on UConn to beat Villanova, then followed with a second bet on the same game, that time wagering $62,000. The fan's bets were first reported for BettingTalk.com by David Purdum, a freelance journalist who has covered the sports-betting world for the past six years.

William Hill officials did not immediately respond to Mashable's request for comment, but sports director Nick Bogdanovich told Purdum that the gambler's Friday double-down bet was one of historic proportions.

“That’s a man-sized bet,” Bogdanovich said. “I’ve been in the business 25 years, and haven’t seen too many people request to bet that kind of money. It’s the biggest bet I’ve ever taken on college basketball.”

While the Super Bowl is known for producing massive bets — Floyd Mayweather was rumored to have bet $10 million on the Broncos this year — March Madness is a different story, Purdum told Mashable. Thousands of bets on the field's 68 teams mean huge overall betting totals, but the average bet for March Madness' opening rounds is only about $25, according to casino managers Purdum spoke with before this year's tournament.

"This is very insane," Purdum said.

So back to the original question: Will the fan — who has purposely remained anonymous — double down again?

Don't count on it, Purdum told Mashable. "There aren't a lot of people that think he's going to do it."

First, there's the fan himself to account for. Purdum said it's not uncommon for gamblers who make such outsized bets to remain anonymous — usually to avoid becoming robbery targets, and for what he called "tax purposes." It would be similarly surprising to see this fan choose to push his luck yet again.

Even if the bettor did want to roll over his wad that now stands at $480,000, he'd likely have trouble finding a casino willing to take the bet. Other gamblers would have to be wagering overwhelmingly on Michigan State to make taking a money line of nearly $500,000 a worthwhile risk. (William Hill CEO Joe Asher had to approve the fan's massive bet on UConn to beat Iowa State on Friday.)

"People think the books will take any bet and be risky," Purdum said. "But that's just not the case."

Then again, this is March — the mad month when anything is possible.

March Madness Coaches Be Like ...

1. 1. John Calipari

   Kentucky's coach on the sideline during the Wildcats' second-round win over Wichita State on March 23, 2014.

   Image: Charlie Riedel/Associated Press

2. 2. Bo Ryan

   Wisconsin's headman protests a call during the Badgers' second-round win over Oregon on March 22, 2014.

   Image: Jeffrey Phelps/Associated Press

3. 3. Steve Alford

   The UCLA coach reacts during his Bruins' first-round win over Tulsa on March 21, 2014.

   Image: Denis Poroy/Associated Press

4. 4. Shaka Smart

   Virginia Commonwealth's coach reacts during his team's first-round win over Stephen F. Austin on March 21, 2014.

   Image: Lenny Ignelzi/Associated Press

5. 5. Fred Hoiberg

   The Iowa State headman in action during his Cyclones' first-round win over North Carolina Central on March 21, 2014.

   Image: Eric Gay/Associated Press

6. 6. Johnny Dawkins

   Stanford's coach reacts during his team's Sweet 16 loss to Dayton on March 27, 2014.

   Image: Mark Humphrey/Associated Press

7. 7. Brad Underwood

   The Stephen F. Austin coach gestures during his team's first-round win over VCU on March 21, 2014.

   Image: Denis Poroy/Associated Press

8. 8. Saul Phillips

   North Dakota State's coach reacts during his team's second-round loss to San Diego State on March 22, 2014.

   Image: Elaine Thompson/Associated Press

9. 9. Mark Few

   The Gonzaga coach ponders during his team's first-round win over Oklahoma State on March 21, 2014.

   Image: Gregory Bull/Associated Press

10. 10. Steve Alford

    The UCLA coach during his team's Sweet 16 loss to Florida on March 27, 2014.

    Image: Mark Humphrey/Associated Press

11. 11. Mike Lonergan

    George Washington's headman busts a move during his team's first-round loss to Memphis on March 21, 2014.

    Image: Chuck Burton/Associated Press