The matches won with the lowest chance of winning, week by week.
The win chance is from the ratings right before the match. Only matches between settled players count: every player has played at least 10 matches and has a rating certain to within ±250 in singles or ±180 in doubles, so a junior improving fast beating a favourite isn't counted as an upset. Walkovers and draws are left out.
5%chance of winning
OSIOSIbeat
HamarHamar21-15, 14-21, 24-22
Women's doubles · Vestre Aker Racketspesialisten.no Open (SEN C) · 11 Nov 2017
5%chance of winning
Ålesundbeat
Norborg21-13, 21-12
Women's singles · Norborg Sparebanken Møre Cup (SEN A) · 11 Nov 2017 · head to head
7%chance of winning
NorborgNorborgbeat
NorborgNorborg21-15, 21-15
Women's doubles · Norborg Sparebanken Møre Cup (SEN A) · 11 Nov 2017
7%chance of winning
Vestre Akerbeat
21-11, 21-19
Men's singles · Vestre Aker Racketspesialisten.no Open (SEN C) · 11 Nov 2017 · head to head
7%chance of winning
Bærumbeat
21-18, 21-16
Men's singles · Vestre Aker Racketspesialisten.no Open (SEN C) · 11 Nov 2017 · head to head
7%chance of winning
beat
Haugerud21-19, 21-18
Men's singles · Vestre Aker Racketspesialisten.no Open (U13 A) · 11 Nov 2017 · head to head
9%chance of winning
Ålesundbeat
Norborg21-16, 21-14
Men's singles · Norborg Sparebanken Møre Cup (U15 A) · 11 Nov 2017 · head to head
10%chance of winning
Bergenbeat
Herøy21-14, 21-16
Men's singles · Leksvik RT 17* (U17 A) · 11 Nov 2017 · head to head
10%chance of winning
Bærumbeat
OSI21-15, 21-18
Men's singles · Vestre Aker Racketspesialisten.no Open (SEN B) · 11 Nov 2017 · head to head
11%chance of winning
Hamarbeat
Moss21-17, 21-19
Men's singles · Vestre Aker Racketspesialisten.no Open (U15 A) · 11 Nov 2017 · head to head
| Week | Upset | Chance |
|---|---|---|
| 30 Dec |
Nicoline Wærsten−105.9| 1% |
| 23 Dec |  Heine Lam Nybakk+4.1 / Sondre Lie Foldnes+4.9 beat Aldrin Nelson−2.9 / Brede Lie Foldnes−5.114-21, 21-19, 21-19 · Men's doubles · Bergen Julecupen 2019 (U15 A) | 19% |
| 2 Dec | Nora Jørgensen+112.6 beat  Shuwen Yang−91.921-19, 21-9 · Women's singles · Trondheim TBK Julecup 2019 (U13 A) | 6% |
| 25 Nov | Rebecca Haukebøe+42.1 beat Laura Ane Opheim−40.021-12, 23-21 · Women's singles · U13 Oslofjorden 19/20 Pulje 1 (1. DS) | 3% |
| 18 Nov | Mathias Wong+11.0 beat Christer Andersen−6.721-15, 9-21, 21-14 · Men's singles · Moss RT 15* + NR SEN* (U15 X) | 8% |
| 11 Nov | Magnus Knapperholen+15.9 / Rishi Arvind Phatak+20.8 beat Tommy Helander−11.8 / Bjørn Hamang−16.221-18, 21-19 · Men's doubles · Asker Asker Open (SEN A) | 8% |
| 4 Nov |  Brede Stenfeldt+68.1 beat  Jonathan Utne Madsøy−31.421-15, 17-21, 21-17 · Men's singles · Sotra Vestlandsmesterskapet 2019 (U17 A) | 3% |
| 28 Oct | Martin Haagenstad+16.6 beat Dexter Regarde−11.310-21, 21-16, 23-21 · Men's singles · Orkanger Yonex Orkland Open (SEN C) | 3% |
| 21 Oct | Tuva Vinnes Bråten+152.0 beat Julie Marie Olsen−64.721-14, 21-12 · Women's singles · 1.div Sør/Vest Pulje 1 (2. DS) | 1% |
| 14 Oct | Mathias Kjellesvik Skjørholm+25.8 beat Eivind Larsen−22.317-21, 21-19, 21-16 · Men's singles · Stavanger KM Badmintonkretsen SØR / Stavanger Open 2019 (U19 A) | 4% |
| 7 Oct | Inger Russnes+9.0 beat Emilie Haukebøe−7.821-16, 13-21, 21-17 · Women's singles · Bygdø Bygdø Høsttreff (U15 A) | 6% |
| 30 Sep |  Marlene Wåland+16.3 / Emma Wåland+10.1 beat Solvår S Flåten Jørgensen−12.6 /  Marie Christensen−10.020-22, 21-18, 21-17 · Women's doubles · Bergen NM-U23 (SEN E) | 5% |
| 23 Sep |  Kai Roger Stensen+40.6 / Isak L. Hasselvold+23.0 beat Amund Skavhaug−23.4 / Robert Barø−21.721-19, 21-18 · Men's doubles · Rissa Clearcup (SEN A) | 6% |
| 16 Sep | Ingrid Jørgensen+18.9 beat  Thea Isabell Hansen−18.618-21, 21-15, 21-16 · Women's singles · Herøy Herøy RT 13 (U13 A) | 13% |
| 9 Sep |  Khiem Duc Nguyen+20.3 beat Magnus Tjøm−14.917-21, 21-13, 21-15 · Men's singles · Kvalifikasjon 1 div 2019 Pulje 1 (1. HS) | 21% |
| 2 Sep | Jens Asmund Solheim+48.6 / Fredrik Skånøy+24.3 beat Rolf Ove Karlsen−28.1 / Trond Mære−26.221-16, 21-19 · Men's doubles · Verdal Øradobbelen (SEN A) | 8% |
| 26 Aug | Solveig Elise Thuestad+3.9 / Emilie Alrek Eide+3.7 beat Linnea Holmedal−2.6 / Amalie Lexander−3.216-21, 21-19, 21-18 · Women's doubles · Haugerud RT 15 + 19 (U15 A) | 7% |
| 22 Jul |  Adrian Olsen-Loe Pedersen+45.7 beat Robert Barø−25.521-14, 15-21, 21-17 · Men's singles · Kolvereid Knut Liland Køpp 2019 (SEN B) | 8% |
| 10 Jun | Tommy Helander+11.2 /  Vegar Næss+12.8 beat Daniel Bjørklund−7.4 / Pål Endre Pedersen−8.921-19, 22-20 · Men's doubles · Orkanger Midtsommernatt 2019 - i Vinstrahallen! (SEN A) | 4% |
| 27 May | Bård Johannesen+13.7 beat Marco Torgersen−8.521-23, 21-19, 21-17 · Men's singles · Hammerfest Midnightsun 2019 (SEN C) | 7% |
| 20 May | Vidar Vikhagen+28.9 beat Kamrul Hasan−17.421-13, 16-21, 22-20 · Men's singles · Haugerud Haugerud vårcup (SEN B) | 3% |
| 6 May | Tomas Toss+13.9 / Yusman Kamaleri+15.8 beat Magnus Knapperholen−9.4 / Rishi Arvind Phatak−11.221-23, 21-15, 21-19 · Men's doubles · Vestre Aker Vestre Aker Open (SEN B) | 2% |
| 29 Apr | Fernando Rey Ortero+13.1 beat Arne Kristian Helgestad−9.021-14, 21-15 · Men's singles · Oslofjordserien 18/19 Sluttspill topp (3. HS) | 7% |
| 22 Apr | Robin Kruksve Krux+8.8 / Jens Asmund Solheim+8.4 beat Rune Oterhals−7.2 / Petter Svendsen−5.722-20, 13-21, 21-19 · Men's doubles · Orkanger Orkla Cup (SEN A) | 7% |
| 1 Apr | Mari Stangeland+9.4 / Kristoffer Sveen Hjertholm+9.4 beat Marie Gade Brask−8.4 / Casper Stiansen−8.021-11, 14-21, 23-21 · Mixed doubles · Haugerud UBM (U15 A) | 8% |
| 25 Mar | Camilla Skrunes Sundt+53.2 beat Audrina Ammara Darmawan−49.621-10, 21-6 · Women's singles · Karmøy Karmøyjunioren (U11 A) | 2% |
| 18 Mar | Qiqing Gan+124.3 beat Marius Imset−63.3 · Men's singles · 1. Div Oslofjorden 18/19 Sluttspill Bunn (1. HS) | 5% |
| 11 Mar | Ole Kristian Lie+18.3 beat  Pranav Tehlan−15.721-18, 9-21, 21-19 · Men's singles · Sotra RT 13 + RT 17 * + NRSenior (U13 A) | 5% |
| 4 Mar | Bente Sotnes+68.0 / Anja Olsen+65.3 beat  Hildegunn Måøy−33.3 / Majken Wærdahl−75.721-10, 20-22, 21-16 · Women's doubles · Orkanger Veteranmesterskapet (O40 A) | 9% |
| 25 Feb | Elise Holmedal+2.8 / Boyan Yu+13.1 beat Elise Lærkerød Jelsness−4.8 / Thomas Grüner Fjeldheim−4.921-16, 13-21, 22-20 · Mixed doubles · Sandefjord RT U19* (U19 A) | 4% |
| 11 Feb | Marte Stokkaune+59.2 beat Ingrid Gåsbakk−33.722-20, 21-18 · Women's singles · Verdal Verdalstreffen (SEN A) | 3% |
| 4 Feb |  Sverre Svensen+159.5 beat Rune Bråten−128.321-14, 21-11 · Men's singles · Rubbestadneset Bømlo Wärtsilä Open 2019 (SEN D) | 2% |
| 28 Jan | Vera Botcharova Ellingsen+57.4 beat Helene Abusdal−57.221-16, 21-17 · Women's singles · Moss NM (SEN E) | 12% |
| 21 Jan | Per Lundgren+22.7 beat Gintar Rundelis−13.122-20, 6-21, 21-13 · Men's singles · Tromsø KM Hålogaland/Tromsø Open (SEN A) | 1% |
| 14 Jan | Viktoria Humlen+69.6 beat Thea Jørgensen−50.221-15, 21-16 · Women's singles · 2.div Midt-Norge Pulje 1 (1. DS) | 3% |
| 7 Jan | Sofia Louis Macsali+20.1 beat Emilie Sotnes Hamang−20.026-24, 12-21, 22-20 · Women's singles · Bygdø RT 13 + NRSenior (SEN E) | 7% |