In order to find out, we created a formula to determine every match's upset magnitude.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2015 |
US Open WTA
|
Final | Flavia Pennetta |
6-7
2-6 |
| 2013 |
US Open WTA
|
Quarter Finals | Flavia Pennetta |
4-6
1-6 |
| 2011 |
Brisbane International
Australia, Brisbane |
Championship | ||
| 2010 |
Roland Garros WTA
France, Paris |
Championship | Flavia Pennetta |
6-1
6-1 |
| 2009 |
Toray Pan Pacific Open
Japan, Tokyo |
Championship | Roberta Vinci |
6-1
6-2 |
| 2009 |
XXIV SNAI Open - Internazionali Femminili di Palermo
|
Championship | Flavia Pennetta |
7-5
6-1 |
| 2009 |
Barcelona Ladies Open
Spain, Barcelona |
Championship | Roberta Vinci |
6-1
6-2 |
| 2007 |
Abierto Mexicano TELCEL presented by HSBC
|
Championship | Flavia Pennetta |
6-0
6-2 |
| 2007 |
XVIII Copa BBVA Colsanitas
|
Championship | Roberta Vinci |
3-6
7-6 6-2 |
| 2005 |
XXIV SNAI Open - Internazionali Femminili di Palermo
|
Championship | Flavia Pennetta |
1-6
6-4 6-7 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2015 |
BNP Paribas WTA Finals Singapore Red Group
|
Championship | Maria Sharapova |
7-5
6-1 |
| 2015 |
BNP Paribas WTA Finals Singapore Red Group
|
Championship | Flavia Pennetta |
6-7
4-6 |
| 2015 |
BNP Paribas WTA Finals Singapore Red Group
|
Championship | Simona Halep |
6-0
6-3 |
| 2015 |
Kremlin Cup By Bank Of Moscow
|
Quarter Finals | Lesia Tsurenko | |
| 2015 |
Kremlin Cup By Bank Of Moscow
|
1/8 | Flavia Pennetta |
6-2
6-4 |
| 2015 |
Tianjin Open
|
1/16 | Lyudmyla Kichenok |
3-6
5-7 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Internazionali BNL d'Italia
|
1/32 | Aleksandra Krunic |
2-6
6-0 6-3 |
| 2018 |
Swiss Women's Championship, Qualification
|
1/12 (Special Qual) | Kathinka Von Deichmann |
6-1
6-3 |
| 2018 |
Miami Open, Qualification
|
1/12 (Special Qual) | Viktorija Golubic |
4-6
3-6 |
| 2018 |
Miami Open, Qualification
|
1/24 (Special Qual) | Roberta Vinci |
7-5
1-6 2-6 |
