When Northwestern did what visiting teams rarely do and beat Wisconsin in the Kohl Center on Sunday, the victory was rightfully celebrated as one of the biggest wins in Wildcats basketball history.

The Badgers were ranked No. 7, and Northwestern went into Madison and won 66-59 without the services of leading scorer Scottie Lindsey, who has now missed four games because of mononucleosis. Most importantly, it was the exact type of win that it needed to bolster its NCAA Tournament resume.

That's huge news, given that Northwestern has never played in the NCAA Tournament.

Of course, nothing should ever be assumed when it comes to Northwestern and March Madness. The Wildcats have had false starts before, only to end up in the NIT -- which they did four years in a row from 2009-12 -- and their resume in Year 4 of the Chris Collins era is hardly bulletproof. Wednesday night showed that.

In the follow-up to the massive win at Wisconsin, Northwestern returned home and lost to No. 23 Maryland 74-64. It's a forgivable loss, given the strength of the Terrapins and the absence of Lindsey, but it was a fitting reminder that nothing is guaranteed for a team that has never heard its name called on Selection Sunday.

Still, despite losing three of its past four games -- Purdue and Illinois, in addition to Maryland -- Northwestern is in solid shape with five regular-season games and the Big Ten tournament left to play. With a 19-7 record, it is projected as a No. 7 seed in the bracketology from both CBS Sports and ESPN. This year's bubble is relatively weak, and Northwestern is 40th in the RPI, according to ESPN, even with only a 3-6 record against the RPI top 50.

Both Michigan and Purdue still have to visit Evanston, and if a healthy Lindsey can return, Northwestern will be in better shape than ever to, at long last, end the drought.

Will the streak be broken? Yes.

So what other college basketball streaks and droughts are on the line as Selection Sunday nears?

Gonzaga: 18 straight tournament bids with 0 Final Fours

Final Four or not, Gonzaga's 18 straight NCAA Tournament bid streak is a stunning achievement. Remember, the Zags made the tournament once ever before their Cinderella run to the Elite Eight in 1999. As the rare team from outside a power conference to climb to No. 1 in the polls, Gonzaga is already a lock to extend its streak of tournament appearances to 19. It is 27-0, and if it stays undefeated, it will also be a lock for the second No. 1 seed in school history. The other time was in 2013, when the Zags were upset by Final Four-bound Wichita State in the Round of 32. This year's Gonzaga team is the most complete squad in school history, led by guard Nigel Williams-Goss and center Przemek Karnowski. It plays weaker competition in the West Coast Conference, but it beat Arizona, Iowa State, Florida and Tennessee in nonconference play and swept Saint Mary's in the conference. It is blowing out everyone and ranks in the top three nationally in KenPom.com's offensive and defensive efficiency. Gonzaga has lost in the Elite Eight twice; making it to the Final Four depends on the draw, of course, and it's likely that Gonzaga will be in the same bracket as a No. 2 seed from the Pac-12. Still, if ever the Zags are set up for a run to the national semifinals, this is the year.

Will the streak be broken? Yes.

Michigan State: 19 straight tournament bids

Last year, Michigan State was a popular pick for the national championship as a No. 2 seed. Typically one of the most consistent threats in March Madness, it responded by losing to 15 seed Middle Tennessee in the first round and ruining countless brackets in one of the biggest tourney upsets ever. Now, without Denzel Valentine and other key players from that team, the Spartans are in unfamiliar territory: on the bubble. They have not missed the tournament since 1996 and '97, coach Tom Izzo's first two seasons. They have made it to at least the Sweet 16 in 13 of 19 years, including seven Final Fours. During the streak, they have been a 10 seed twice, and it's possible that could be their fate this year. Michigan State lost its key nonconference games to Arizona, Kentucky, Baylor and Duke -- in addition to losing to Northeastern -- and it is 16-10 overall and 8-5 in the Big Ten, with youth and depth issues hurting it all year. The Spartans do have a standout freshman in Miles Bridges, though, and while they were blown out by Michigan last week, they've won four out of five. Two of their next three games are massive: at Purdue on Saturday and vs. Wisconsin on Feb. 26. Add one of those wins to their resume, and the Spartans should be able to breathe easier come Selection Sunday.

Will the streak be broken? No.

Kansas: 12 straight Big 12 titles

There are times when it appears that Kansas might finally break, that someone else might catch it and deny it yet another Big 12 title. And then Kansas does something like erase a 14-point deficit in the final three minutes against West Virginia and win in overtime. That comeback win combined with Baylor's loss to Texas Tech on Monday put Kansas two games ahead of the Bears and three games ahead of the Mountaineers and Iowa State in the Big 12 standings. Kansas has some depth issues, particularly in the post, but few teams can match the trio of Frank Mason, Josh Jackson and Devonte' Graham. There are tricky games left, starting with Saturday's tough road trip to Baylor, but Kansas is 23-3 overall and it has been absurdly consistent under coach Bill Self. There's no reason to believe that it won't finish with at least a share of the regular-season conference crown for a 13th straight season.

Will the streak be broken? No.

Pac-12: 8 years without a Final Four team

Tune into a Pac-12 game on ESPN, and you're likely to hear Bill Walton repeatedly refer to the league as the "conference of champions." It was true for Walton's days as part of UCLA's John Wooden dynasty, but now the conference hasn't had a participant in the Final Four since 2008, when UCLA lost in the semifinals. In fact, the Pac-12 has never had a Final Four team since it expanded, and the Bruins -- which made three straight Final Four trips from 2006-08 -- are the only team from the conference to advance to the Final Four since Arizona in 2001. This year's Pac-12 boasts three Final Four candidates: Oregon, Arizona and UCLA. One of them is likely to be the No. 2 seed in the West Region with Gonzaga, making it more difficult for both to end their drought. Throw in UCLA's defensive issues, and it's far from a safe bet to say that the Pac-12 will be represented in the Final Four, especially since it's possible none will be a No. 1 seed, even if the Ducks, Wildcats and Bruins all have the upside to win a regional.

Will the streak be broken? No.

Big Ten: 16 years without a national championship

The Big Ten has had several strong seasons in recent years, but it hasn't actually won a national championship since Michigan State did it in 2000, despite producing 12 Final Four teams in that span. (Maryland won the title in 2002, but it was a member of the ACC at the time.) At the moment, it appears that the Big Ten missed a window of opportunity. The conference is down this season, so much so that it might not have a team higher than a No. 5 seed -- it didn't in the selection committee's in-season look at the bracket last Saturday. Right after that, Wisconsin lost to Northwestern and Michigan, further damaging its case. The Big Ten has had at least one top-four seed every year since 2005. While Wisconsin and Purdue both have strong teams led by star players -- the Badgers' Ethan Happ and the Boilermakers' Caleb Swanigan -- to give it a chance of getting to Phoenix, it's going to be difficult for what's been a mediocre league overall to get a team to the Final Four at all, making a national title seem far-fetched.

Will the streak be broken? No.

Virginia Tech: 9 years without a tournament bid

This week mixed good news and bad news for the Hokies, who have been to the tournament only once (2007) in the past 20 seasons. On Sunday, they scored a massive double-OT win over rival Virginia, only for it to be announced that starting guard Chris Clarke will miss the rest of the season with a torn ACL. The Hokies do still have plenty going for them: They're 18-7 overall and 7-6 in the ACC, a conference that the selection committee loves. They also own wins over Duke and Virginia, plus Michigan in nonconference play (with a loss to Texas A&M). Of course, finishing strong won't be easy, especially without Clarke. They do play Boston College, but their other four remaining opponents are all KenPom top-35 teams (Louisville, Clemson, Miami and Wake Forest). While the Hokies did get blown out at N.C. State, they have avoided season-wrecking losses and boast a solid case right now. Often a mainstay of the bubble conversation, Virginia Tech may finally come out on the right side.

Will the streak be broken? Yes.

South Carolina: 12 years without a tournament bid

It's been a rough couple weeks for the Gamecocks, who lost in four overtimes to Alabama last week, then lost at home to Arkansas on Wednesday. They're still 20-6 overall with wins over Michigan, Syracuse and Florida, and they rank No. 2 in KenPom' adjusted defensive efficiency. Guard Sindarius Thornwell has been a star, and while mediocre offense will hold South Carolina back in the tournament itself, it is still in excellent shape.

Will the streak be broken? Yes.

TCU: 18 years without a tournament bid

Coach Jamie Dixon made the surprising leap from Pitt to TCU, after things had seemed to get stale with the Panthers. In his first season in Fort Worth, the Horned Frogs have a legitimate chance of going dancing for the first time since 1998 -- three conferences ago. From the WAC to Conference USA to the Mountain West and now to the Big 12, TCU is finally at least making a case to be included with a 17-9 overall record. The Frogs are 6-7 in the tough Big 12, and they have a brutal schedule left with Iowa State, Kansas, West Virginia and Kansas State before ending with Oklahoma. They have no bad losses, making them a solid bet right now, but they need a marquee win in this tough ending stretch.

Will the streak be broken? No.

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Contact Matt at matt.brown5082@gmail.com and follow him on Twitter @MattBrownCFB and Facebook.