2x Arnold Classic
William Bonac
William Bonac is a Men's Open Bodybuilding competitor from the Netherlands with a competitive record spanning 2009–2026.
Where the titles came from
Counted from the same results table below: an appearance is one contest entered (in the years the Olympia also judged weight classes, one appearance can carry two placings), an Olympia title is the overall win in that division, and Top 3 counts first, second and third together. The last row is every professional contest on record for William Bonac.
Mr. Olympia
Arnold Classic
All contests on record
Professional results
Every professional contest result on record for William Bonac, 57 in all. The table opens on the first 15 and expands in place from there. Nothing sits on a separate page. Won by names the winner of the division William Bonac competed in, and shows a dash where that winner cannot be pinned to one person in the database.
| Year | Contest | Division | Place | Won by |
|---|---|---|---|---|
| 2026 | 2026 Empro Classic Spain Pro | Men's Open Bodybuilding | #1 | Winner |
| 2026 | 2026 FLEX Weekend Italy Pro | Men's Open Bodybuilding | #2 | Edward Kargbo |
| 2026 | 2026 France Pro | Men's Open Bodybuilding | #1 | Winner |
| 2026 | Mr. Olympia | Men's Open Bodybuilding | #16 | Nick Walker |
| 2025 | Arnold Classic | Men's Open Bodybuilding | #5 | Derek Lunsford |
| 2025 | IFBB Detroit Pro | Men's Open Bodybuilding | #1 | Winner |
| 2025 | IFBB Dubai Pro | Men's Open Bodybuilding | #2 | Behrooz Tabani Abarghani |
| 2025 | IFBB New York Pro | Men's Open Bodybuilding | #2 | Nick Walker |
| 2025 | IFBB Pittsburgh Pro | Men's Open Bodybuilding | #4 | Derek Lunsford |
| 2025 | Mr. Olympia | Men's Open Bodybuilding | #9 | Derek Lunsford |
| 2024 | IFBB Dubai Pro | Men's Open Bodybuilding | #2 | Behrooz Tabani Abarghani |
| 2024 | IFBB Empro Pro | Men's Open Bodybuilding | #1 | Winner |
| 2024 | Mr Big Evolution Portugal Pro | Men's Open Bodybuilding | #2 | Nathan De Asha |
| 2024 | Mr. Olympia | Men's Open Bodybuilding | #7 | Samson Dauda |
| 2022 | Arnold Classic | Men's Open Bodybuilding | #2 | Brandon Curry |
| 2022 | IFBB Boston Pro | Men's Open Bodybuilding | #1 | Winner |
| 2022 | Mr. Olympia | Men's Open Bodybuilding | #9 | Hadi Choopan |
| 2021 | Mr. Olympia | Men's Open Bodybuilding | #6 | Mamdouh Elssbiay |
| 2020 | Arnold Classic | Men's Open Bodybuilding | #1 | Winner |
| 2020 | Mr. Olympia | Men's Open Bodybuilding | #5 | Mamdouh Elssbiay |
| 2019 | Arnold Classic | Men's Open Bodybuilding | #2 | Brandon Curry |
| 2019 | Arnold Classic Australia | Men's Open Bodybuilding | #1 | Winner |
| 2019 | Mr. Olympia | Men's Open Bodybuilding | #2 | Brandon Curry |
| 2018 | Arnold Classic | Men's Open Bodybuilding | #1 | Winner |
| 2018 | Arnold Classic Australia | Men's Open Bodybuilding | #2 | Roelly Winklaar |
| 2018 | Mr. Olympia | Men's Open Bodybuilding | #4 | Shawn Rhoden |
| 2017 | Arnold Classic Europe | Men's Open Bodybuilding | #2 | Mamdouh Elssbiay |
| 2017 | Mr. Olympia | Men's Open Bodybuilding | #3 | Phil Heath |
| 2017 | Prague Pro Championships | Men's Open Bodybuilding | #2 | Roelly Winklaar |
| 2016 | Arnold Classic Europe | Men's Open Bodybuilding | #3 | Dexter Jackson |
| 2016 | Kuwait Pro Championships | Men's Open Bodybuilding | #5 | Mamdouh Elssbiay |
| 2016 | Mr. Olympia | Men's Open Bodybuilding | #5 | Phil Heath |
| 2016 | Nordic Pro (Finland) | Men's Open Bodybuilding | #1 | Winner |
| 2016 | Olympia Europe | Men's Open Bodybuilding | #3 | Dexter Jackson |
| 2016 | Prague Pro Championships | Men's Open Bodybuilding | #1 | Winner |
| 2015 | Arnold Classic Europe | Men's Open Bodybuilding | #6 | Dexter Jackson |
| 2015 | Dayana Cadeau Classic | Men's Open Bodybuilding | #1 | Winner |
| 2015 | IFBB EVLS Prague Pro | Men's Open Bodybuilding | #5 | Dexter Jackson |
| 2015 | Mr. Olympia | Men's Open Bodybuilding | #8 | Phil Heath |
| 2015 | Nordic Pro (Finland) | Men's Open Bodybuilding | #1 | Winner |
| 2015 | Prague Pro Championships | Men's Open Bodybuilding | #5 | Dexter Jackson |
| 2015 | San Marino Pro | Men's Open Bodybuilding | #2 | Joshua Lenartowicz |
| 2014 | Arnold Classic Brasil | Men's Open Bodybuilding | #7 | Stephen Kuclo |
| 2014 | Arnold Classic Europe | Men's Open Bodybuilding | #6 | Dennis Wolf |
| 2014 | Australia Pro Grand Prix | Men's Open Bodybuilding | #2 | Shawn Rhoden |
| 2014 | EVLS Prague Pro | Men's Open Bodybuilding | #8 | Dennis Wolf |
| 2014 | Golden State Grand Prix | Men's Open Bodybuilding | #1 | Winner |
| 2014 | Grand Prix Russia | Men's Open Bodybuilding | #1 | Winner |
| 2014 | IFBB San Marino Pro | Men's Open Bodybuilding | #11 | Shawn Rhoden |
| 2014 | IFBB Tampa Pro | Men's Open Bodybuilding | #2 | Victor Martinez |
| 2014 | Mr. Olympia | Men's Open Bodybuilding | #15 | Phil Heath |
| 2013 | IFBB EVL Prague Pro | Men's Open Bodybuilding | #5 | Kai Greene |
| 2013 | Prague Pro Championships | Men's Open Bodybuilding | #5 | Kai Greene |
| 2012 | EVL Prague Pro | Men's 212 Bodybuilding | #4 | Flex Lewis |
| 2012 | IFBB British Grand Prix | Men's 212 Bodybuilding | #6 | Flex Lewis |
| 2012 | IFBB Europa SuperShow | Men's 212 Bodybuilding | #3 | David Henry |
| 2009 | Pro Battle of Giants | Men's Open Bodybuilding | #4 | Orazio Salvatori |
Showing 15 of 57 professional results.
Where these results come from. Each contest in the table was recorded from a named source, and for William Bonac those sources are NPC Contests, MuscleMemory and IFBB Pro League. Open any contest above and that page names its own source and links to it where the source is still reachable. MuscleMemory is the exception: the archive we recorded those older shows from no longer answers at the addresses we hold, so it is credited by name and not offered as a link.
Every professional season
Peak Year 2014 (2 wins)
Measured against William Bonac’s own seasons, not against the field. See the full peak window →
- Pro Debut
- 2009
- First Win
- 2014
- Last Contest
- 2026
William Bonac at the Olympia, year by year
| Year | Placement | Division |
|---|---|---|
| 2014 | 15 | Men's Open Bodybuilding |
| 2015 | 8 | Men's Open Bodybuilding |
| 2016 | 5 | Men's Open Bodybuilding |
| 2017 | 3 | Men's Open Bodybuilding |
| 2018 | 4 | Men's Open Bodybuilding |
| 2019 | 2 | Men's Open Bodybuilding |
| 2020 | 5 | Men's Open Bodybuilding |
| 2021 | 6 | Men's Open Bodybuilding |
| 2022 | 9 | Men's Open Bodybuilding |
| 2024 | 7 | Men's Open Bodybuilding |
| 2025 | 9 | Men's Open Bodybuilding |
| 2026 | 16 | Men's Open Bodybuilding |
Data updated
How William Bonac measures up
Fat-free mass index turns the height and weight on this profile into one number for how much muscle a frame carries, so a shorter competitor is not flattered by a bodyweight comparison. The normalised figure adjusts it again to a standard height, which is the version worth ranking. Both assume the 6% body fat a competitor steps on stage at, because that is the only condition the recorded weight was taken in.
The closest Olympia champion on that measure is Shawn Rhoden, at 34.4, the same figure.
What this rank is not. This database holds a height and a weight for just 463 athletes, and they are overwhelmingly the ones somebody bothered to measure: 74 of them hold an Olympia title. Almost every competitor on record carries no measurement at all. The pool also mixes every division and era together, from the lightweight women's classes to the open heavyweights, so it ranks size and nothing else. It says where William Bonac sits among the athletes we hold measurements for, not among competitors.
Amateur and other shows not counted above
5 results from amateur shows and other contests this archive does not class as professional. Every total on this page covers the professional career only, so these are listed here but never counted, and they have no contest page.
Show the list
| Year | Contest | Division | Place |
|---|---|---|---|
| 2011 | Arnold Amateur | Men's Bodybuilding (Heavyweight) | #3 |
| 2009 | Universe | Division not recorded (Short) | #1 |
| 2008 | European Championships | Division not recorded (Short) | #4 |
| 2008 | Universe | Division not recorded (Short) | #4 |
| 2008 | Universe | Division not recorded (Medium) | #5 |
More Men's Open Bodybuilding athletes Athletes from Netherlands William Bonac peak window William Bonac division journey
Most-met rivals
Compare any two athletes →In 21 meetings, William Bonac finished ahead of Brandon Curry 12 times to 9.
Opponents are ranked by how often they shared a stage and how big the stage was, not by reputation. A meeting is one contest where both competed in the same division and both were placed.
Win rate here is first-place finishes as a share of all 57 professional contest results. It is published only where a career holds at least five, because below that a single placing moves the figure by twenty points or more.
Latest Coverage
- William Bonac Climbed From 15th to 2nd at the Olympia. This Weekend He Says Goodbye
- Bodybuilder James Hollingshead Reveals His Top 5 Men’s Open Predictions for the 2026 Italy Pro
- 2026 Tsunami Nutrition Showdown France Pro Results
- William Bonac’s Passion for Bodybuilding is ‘Fading,’ Says ‘There Is No Brotherhood’: “It’s Different Now”
- Samson Dauda Leads 2025 Mr. Olympia Prejudging in a Four-Man Race for the Sandow
- Bodybuilders Iain Valliere and Seth Feroce Give Top 5 Men’s Open Picks for the 2024 Dubai Pro

