Eefje Muskens
Eefje Muskens is a Dutch badminton player who specializes in doubles. Her current partner for women's doubles is Selena Piek. She won the 2014 and 2015 editions of Dutch National Badminton Championships with Piek. In 2016, she and Piek competed at the Rio Summer Olympics and reached the quarter final round.
Achievements
European Championships
Women's Doubles| Year | Venue | Partner | Opponent | Score | Result |
| 2016 | Vendéspace, La Roche-sur-Yon, France |  Selena Piek |  Kamilla Rytter Juhl Christinna Pedersen | 18–21, 17–21 | Silver |
| 2014 | Gymnastics Center, Kazan, Russia | Selena Piek | Line Damkjaer Kruse Marie Roepke | 23–25, 11–21 | Bronze |
BWF Grand Prix
The BWF Grand Prix has two level such as Grand Prix and Grand Prix Gold. It is a series of badminton tournaments, sanctioned by Badminton World Federation since 2007.Women's Doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2016 | Syed Modi International | Selena Piek |  Jung Kyung-eun Shin Seung-chan | 15–21, 13–21 | Runner-up |
| 2015 | Brasil Open | Selena Piek |  Chen Qingchen Jia Yifan | 17–21, 14–21 | Runner-up |
| 2015 | Dutch Open | Selena Piek |  Gabriela Stoeva Stefani Stoeva | 22–24, 15–21 | Runner-up |
| 2015 | Canada Open | Selena Piek |  Jwala Gutta Ashwini Ponnappa | 19–21, 16–21 | Runner-up |
| 2014 | Dutch Open | Selena Piek |  Shendy Puspa Irawati Shendy Puspa Irawati | 11–8, 4–11, 11–9, 11–10 | Winner |
| 2013 | Scottish Open | Selena Piek |  Ng Hui Ern Ng Hui Lin | 25–23, 15–21, 21–16 | Winner |
| 2013 | Bitburger Open | Selena Piek | Ng Hui Ern Ng Hui Lin | 22–20, 21–15 | Winner |
| 2013 | Canada Open | Selena Piek | Yu Xiaohan Huang Yaqiong | 21–13, 11–21, 13–21 | Runner-up |
| 2012 | Dutch Open | Samantha Barning | Selena Piek Iris Tabeling | 21–19, 16–21, 20–22 | Runner-up |
BWF International Challenge/Series
Women's doubles| Year | Tournament | Partner | Opponent | Score | Result |
| 2014 | Belgian International | Selena Piek | Samantha Barning Iris Tabeling | 11–9, 9–11, 8–11, 11–7, 11–9 | Winner |
| 2014 | Swedish Masters | Selena Piek | Line Damkjaer Kruse Marie Roepke | 21–19, 21–11 | Winner |
| 2013 | Italian International | Selena Piek |  He Tian Tang Renuga Veeran | 21–10, 21–8 | Winner |
| 2013 | Irish Open | Selena Piek | Ng Hui Ern Ng Hui Lin | 21–17, 21–10 | Winner |
| 2012 | Irish International | Samantha Barning |  Audrey Fontaine Emilie Lefel | 21–12, 21–8 | Winner |
| 2012 | Norwegian International | Samantha Barning | Selena Piek Iris Tabeling | 22–20, 21–16 | Winner |
| 2012 | Croatian International | Samantha Barning |  Johanna Goliszewski Carla Nelte | 21–18, 21–19 | Winner |
| 2010 | Dutch International | Samantha Barning | Maria Helsbøl Anne Skelbæk | 21–8, 21–18 | Winner |
| 2009 | Norwegian International | Samantha Barning | Helle Nielsen Marie Røpke | 13–21, 18–21 | Runner-up |