Ronald Alexander (badminton)
Ronald Alexander 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, 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, 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 | Lu Ching-yao Huang Chu-en | 17–21, 19–21 | Bronze |
BWF World Tour (1 runner-up)
The BWF World Tour, announced on 19 March 2017 and implemented in 2018, is a series of elite badminton tournaments, sanctioned by Badminton World Federation. The BWF World Tour are divided into six levels, namely World Tour Finals, Super 1000, Super 750, Super 500, Super 300, 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 has two levels: Grand Prix and Grand Prix Gold. It is a series of badminton tournaments, sanctioned by Badminton World Federation since 2007.Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2013 | Indonesia Masters | Selvanus Geh | Angga Pratama Ryan Agung Saputra | 21–17, 15–21, 16–21 | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2017 | New Zealand Open | Annisa Saufika |  Sawan Serasinghe Setyana Mapasa | 21–19, 21–14 | Champion |
| 2016 | Indonesia Masters | Melati Daeva Oktavianti |  Tan Kian Meng Lai Pei Jing | 21–16, 21–17 | Champion |
| 2015 | Chinese Taipei Masters | Melati Daeva Oktavianti | Chang Ko-chi Chang Hsin-tien | 21–18, 25–27, 21–15 | Champion |
BWF International Challenge/Series (1 title, 3 runners-up)
Men's doubles| Year | Tournament | Partner | Opponent | Score | Result |
| 2014 | Bulgarian International | Edi Subaktiar | Selvanus Geh Kevin Sanjaya Sukamuljo | 9–21, 13–21 | Runner-up |
| 2013 | Iran Fajr International | Selvanus Geh | Wahyu Nayaka Ade Yusuf | 19–21, 21–13, 20–22 | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2015 | Austrian Open | Melati Daeva Oktaviani | Edi Subaktiar Gloria Emanuelle Widjaja | 21–15, 20–22, 18–21 | Runner-up |
| 2014 | Indonesia International | Melati Daeva Oktaviani | Muhammad Rijal Vita Marissa | 7–11, 11–4, 11–6, 11–7 | Champion |
Performance timeline
Indonesian team
- Junior level
| Team Events | 2011 |
| Asia Junior Championships | Bronze |
Individual competitions
- Junior level
| Event | 2011 |
| Asia Junior Championships | Bronze R2 |
| Event | 2011 |
| World Junior Championships | Bronze Silver |
- Senior level
| Event | 2016 | 2017 |
| Asia Championships | R2 | R1 |
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