| 1 | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 2 | Swimming at the 2007 World Aquatics Championships – Men's 50 metre butterfly - Semifinals |  |  |  |  |  |
| 3 | Rank | Heat/Lane | Swimmer | Country | Time | Note |
| 4 | 1 | S1-L4 | Roland Schoeman | South Africa | 23.18 | Q |
| 5 | 2 | H2-L4 | Ian Crocker | USA | 23.42 | Q |
| 6 | 3 | H2-L5 | Sergiy Breus | Ukraine | 23.53 | Q |
| 7 | 4 | S1-L3 | Albert Subirats Altes | Venezuela | 23.59 | Q |
| 8 | 5 | S1-L5 | Lars Frölander | Sweden | 23.82 | Q |
| 9 | 6 | H2-L8 | Peter Mankoč | Slovenia | 23.91 | Q |
| 10 | 7 | H2-L3 | Milorad Čavić | Serbia | 23.94 | Q |
| 11 | 8 | S1-L6 | Jakob Andkjær | Denmark | 23.99 | Q (swim-off) |
| 12 | 8 | S1-L1 | Lyndon Ferns | South Africa | 23.99 | (swim-off) |
| 13 | 10 | H2-L1 | Ryo Takayasu | Japan | 24.03 | - |
| 14 | 11 | S1-L2 | Matti Rajakylä | Finland | 24.10 | - |
| 15 | 11 | S1-L7 | Ryan Pini | Papua New Guinea | 24.10 | - |
| 16 | 13 | H2-L6 | Andriy Serdinov | Ukraine | 24.12 | - |
| 17 | 14 | S1-L8 | Jernej Godec | Slovenia | 24.26 | - |
| 18 | 15 | H2-L7 | Örn Arnarson | Iceland | 24.34 | - |
| 19 | 16 | H2-L2 | Matt Welsh | Australia | 24.41 | - |

Question: Were there any swim-offs?
Answer: A swim-off for 8th place occurred between Jakob Andkjær and Lyndon Ferns who tied for 8th at 23.99.