Boy Westerhof
Boy Westerhof is a Dutch professional tennis player and competes mainly on the ATP Challenger Tour and ITF Futures, both in singles and doubles.
Westerhof reached his highest ATP singles ranking, No. 201 on 27 August 2012, and his highest ATP doubles ranking, No. 132, on 8 June 2015.
He made his ATP World Tour main draw debut at the 2013 ATP Vegeta Croatia Open Umag as a qualifier.
Career finals (4)
Doubles (12)
| Finals by Surface |
| Hard |
| Clay |
| Grass |
| Carpet |
| Outcome | No. | Date | Tournament | Surface | Partnering | Opponents in the final | Score |
| Winners | 1. | 5 August 2007 | Saransk, Russia | Clay |  Antal van der Duim |  Alexey Kedryuk  Uros Vico | 2–6, 7–63, |
| Winners | 2. | 26 August 2007 | Manerbio, Italy | Clay | Antal van der Duim |  Frederico Gil  Alberto Martin | 7–64, 3–6, |
| Runner-up | 3. | 20 July 2008 | Oberstaufen, Germany | Clay |  André Ghem |  Dušan Karol Jaroslav Pospíšil | 7–6, 1–6, |
| Runner-up | 4. | 26 July 2008 | Penza, Russia | Hard | André Ghem |  Denis Istomin Evgeny Kirillov | 2–6, 6–3, |
| Winners | 5. | 15 July 2012 | Scheveningen, Netherlands | Clay | Antal van der Duim |  Rameez Junaid Simon Stadler | 6–4, 5–7, |
| Winners | 6. | 14 July 2013 | Scheveningen, Netherlands | Clay | Antal van der Duim | Gero Kretschmer Alexander Satschko | 6–3, 6–3 |
| Winners | 7. | 8 September 2013 | Alphen, Netherlands | Clay | Antal van der Duim | Simon Greul Wesley Koolhof | 4–6, 6–3, |
| Winners | 8. | 13 July 2014 | Scheveningen, Netherlands | Clay | Matwé Middelkoop |  Martin Fischer Jesse Huta Galung | 6–4, 3–6, |
| Winners | 9. | 7 September 2014 | Alphen, Netherlands | Clay | Antal van der Duim | Rubén Ramírez Hidalgo Matteo Viola | 6–1, 6–3 |
| Winners | 10. | 13 September 2014 | Seville, Spain | Clay | Antal van der Duim |  James Cluskey Jesse Huta Galung | 7–6, 6–4 |
| Runner-up | 11. | 11 September 2016 | Alphen, Netherlands | Clay | Robin Haase | Daniel Masur Jan-Lennard Struff | 4–6, 1–6 |
| Winners | 12. | 10 September 2017 | Alphen, Netherlands | Clay | Botic van de Zandschulp |  Alexandar Lazov  Volodymyr Uzhylovskyi | 7–6, 7–5 |