Swimming at the 2009 World Aquatics Championships – Men's 100 metre backstroke
| Men's 100 metre backstroke at the 2009 FINA World Championships |
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| Venue | Foro Italico | |||||||||
| Dates | 27 July 2009 (heats, semifinals) 28 July 2009 (final) |
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| Competitors | 121 | |||||||||
| Winning time | 52.26 seconds | |||||||||
| Medalists | ||||||||||
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The men's 100 metre backstroke at the 2009 World Championships took place Monday 27 July (prelims and semifinals) and on the evening of Tuesday 28 July (final) at the Foro Italico in Rome, Italy.
The existing records at the start of the event were:
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