# Ronald Alexander (badminton)

Ronald Alexander (born 15 August 1993) is an Indonesian badminton player specializes in doubles. He is joined the Jaya Raya Jakarta badminton club in 2008, and moved to Jaya Raya Suryanaga Surabaya in 2011.

## Achievements
### BWF World Junior Championships

Boys' doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2011 | Taoyuan Arena, Taoyuan City, Taipei, Chinese Taipei | Selvanus Geh | Huang Po-jui Lin Chia-yu | 19–21, 23–21, 21–15 | Bronze |
Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2011 | Taoyuan Arena, Taoyuan City, Taipei, Chinese Taipei | Tiara Rosalia Nuraidah | Alfian Eko Prasetya Gloria Emanuelle Widjaja | 21–12, 17–21, 23–25 | Silver |

### Asian Junior Championships

Boys' doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2011 | Babu Banarasi Das Indoor Stadium, Lucknow, India | Selvanus Geh | Huang Chu-en Lu Ching-yao | 17–21, 19–21 | Bronze |

### BWF World Tour (1 runner-up)

The BWF World Tour, which was announced on 19 March 2017 and implemented in 2018, is a series of elite badminton tournaments sanctioned by the Badminton World Federation (BWF). The BWF World Tours are divided into levels of World Tour Finals, Super 1000, Super 750, Super 500, Super 300 (part of the HSBC World Tour), and the BWF Tour Super 100.
Mixed doubles
| Year | Tournament | Level | Partner | Opponent | Score | Result |
| 2018 | Lingshui China Masters | Super 100 | Annisa Saufika | Guo Xinwa Liu Xuanxuan | 17–21, 21–7, 19–21 | Runner-up |

### BWF Grand Prix (3 titles, 1 runner-up)

The BWF Grand Prix had two levels, the BWF Grand Prix and Grand Prix Gold. It was a series of badminton tournaments sanctioned by the Badminton World Federation (BWF) which was held from 2007 to 2017.
Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2013 | Indonesia Grand Prix Gold | Selvanus Geh | Angga Pratama Ryan Agung Saputra | 21–17, 15–21, 16–21 | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2015 | Chinese Taipei Masters $^{(1)}$ | Melati Daeva Oktavianti | Chang Ko-chi Chang Hsin-tien | 21–18, 25–27, 21–15 | Winner |
| 2016 | Indonesia Masters $^{(1)}$ | Melati Daeva Oktavianti | Tan Kian Meng Lai Pei Jing | 21–16, 21–17 | Winner |
| 2017 | New Zealand Open $^{(1)}$ | Annisa Saufika | Sawan Serasinghe Setyana Mapasa | 21–19, 21–14 | Winner |
    BWF Grand Prix Gold tournament
    BWF Grand Prix tournament

### BWF International Challenge/Series (1 title, 3 runners-up)

Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2013 | Iran Fajr International | Selvanus Geh | Wahyu Nayaka Ade Yusuf | 19–21, 21–13, 20–22 | Runner-up |
| 2014 | Bulgarian International | Edi Subaktiar | Selvanus Geh Kevin Sanjaya Sukamuljo | 9–21, 13–21 | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2014 | Indonesia International | Melati Daeva Oktaviani | Muhammad Rijal Vita Marissa | 7–11, 11–4, 11–6, 11–7 | Winner |
| 2015 | Austrian Open | Melati Daeva Oktaviani | Edi Subaktiar Gloria Emanuelle Widjaja | 21–15, 20–22, 18–21 | Runner-up |
    BWF International Challenge tournament
    BWF International Series tournament

## Performance timeline
### National team

* Junior level
| Team event | 2011 |
| Asian Junior Championships | Bronze |

### Individual competitions

* Junior level
| Event | 2011 |
| Asian Junior Championships | Bronze (BD) R2 (XD) |
| World Junior Championships | Bronze (BD) Silver (XD) |
* Senior level
| Event | 2016 | 2017 |
| Asian Championships | R2 | R1 |
| Event | 2018 | 2019 |
| World Championships | R2 | R1 |
| Tournament | 2018 | 2019 | Best |
| BWF World Tour ||||
| Thailand Masters | R2 | R2 | R2 (2017, 2018, 2019) |
| Malaysia Masters | A | R1 | QF (2016) |
| Indonesian Masters | R1 | R1 | W (2016) |
| All England Open | A | R1 | R1 (2016, 2017, 2019) |
| Swiss Open | A | R2 | R2 (2019) |
| Lingshui China Masters | F | A | F (2018) |
| Malaysia Open | R2 | R2 | R2 (2016, 2018, 2019) |
| Singapore Open | R1 | R2 | R2 (2019) |
| New Zealand Open | QF | A | W (2017) |
| Australian Open | R1 | A | R1 (2016, 2018) |
| Indonesia Open | R1 | R1 | R2 (2016) |
| Thailand Open | A | R1 | QF (2017) |
| Chinese Taipei Open | SF | R1 | SF (2015, 2018) |
| Korea Open | R1 | A | R1 (2015, 2018) |
| Macau Open | QF | A | SF (2015) |
| Hong Kong Open | R2 | A | R2 (2015, 2018) |
| Syed Modi International | QF | A | QF (2016, 2018) |
| Year-end Ranking | 31 | 52 | 14 |
| Tournament | 2018 | 2019 | Best |
| Tournament | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | Best |
| BWF Super Series ||||||||
| All England Open | A | A | A | A | R1 | R1 | R1 (2016, 2017) |
| Malaysia Open | A | A | A | A | R2 | A | R2 (2016) |
| Singapore Open | A | A | A | A | A | R1 | R1 (2017) |
| Indonesia Open | R2 | A | A | R1 | R2 | R1 | R2 (2012, 2016) |
| Australian Open | A | A | A | A | R1 | A | R1 (2016) |
| Japan Open | A | A | A | R2 | A | A | R2 (2015) |
| Korea Open | A | A | A | R1 | A | A | R1 (2015) |
| Denmark Open | A | A | A | A | R1 | A | R1 (2016) |
| French Open | A | A | A | A | R2 | A | R2 (2016) |
| China Open | A | R1 | A | A | R2 | A | R2 (2016) |
| Hong Kong Open | A | A | A | R2 | R1 | A | R2 (2015) |
| Year-end Ranking | 73 (MD) | 61 (MD) 205 (XD) | 114 (MD) 44 (XD) | 21 | 14 | 77 | 14 |
| Tournament | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | Best |
| BWF Grand Prix and Grand Prix Gold ||||||||
| Malaysia Masters | A | R2 (MD) | A | R1 | QF | R2 | QF (2016) |
| Syed Modi International | R1 (MD) | — | A | A | QF | A | QF (2016) |
| Thailand Masters | — | — | — | — | A | R2 | R2 (2017) |
| German Open | A | A | A | QF | A | A | QF (2015) |
| Swiss Open | A | A | A | A | R1 | R1 | R1 (2016, 2017) |
| China Masters | SS | SS | A | R2 | A | A | R2 (2015) |
| New Zealand Open | — | A | W/o | R2 | A | W | W (2017) |
| Chinese Taipei Open | A | R1 (MD) | QF (XD) | SF | R2 | A | SF (2015) |
| Vietnam Open | A | A | SF (MD) SF (XD) | R2 | A | SF | SF (2014, 2017) |
| Thailand Open | A | R1 (MD) | — | R1 | A | QF | QF (2017) |
| Dutch Open | A | A | QF (MD) QF (XD) | A | A | A | QF (2014) |
| Chinese Taipei Masters | — | — | — | W | A | — | W (2015) |
| Korea Masters | A | R2 (XD) | A | R2 | A | A | R2 (2013, 2015) |
| Macau Open | A | A | R1 (MD) R2 (XD) | SF | A | A | SF (2015) |
| Indonesian Masters | R2 (MD) | F (MD) | R2 (MD) R2 (XD) | R2 | W | — | W (2016) |
| Year-end Ranking | 73 (MD) | 61 (MD) 205 (XD) | 114 (MD) 44 (XD) | 21 | 14 | 77 | 14 |

## Record against selected opponents

Mixed doubles results with Melati Daeva Oktaviani against World Superseries finalists, World Superseries Finals semifinalists, World Championships semifinalists, and Olympic quarterfinalists.
* Lu Kai & Huang Yaqiong 2–0
* Xu Chen & Ma Jin 0–2
* Joachim Fischer Nielsen & Christinna Pedersen 0–1
* Reginald Lee Chun Hei & Chau Hoi Wah 1–1
* Muhammad Rijal & Vita Marissa 1–1
* Tontowi Ahmad & Liliyana Natsir 0–1
* Ko Sung-hyun & Kim Ha-na 0–2