| Men 200m Butterfly Swimming III World Championship 1978 West Berlin - Wednesday, 23rd August - Gold Medal: Gold Medal: Mike Bruner, United States | 
| Final |   | time |   | gap | L | ag | 50m | 100m | 150m |  | 1. Mike Bruner |   United States | 1:59.38 | CR |   | 4 | 22 | 27.26s | 57.72s | 1:28.52 |  | 2. Steve Gregg |   United States | 1:59.80 |   | +0.42 | 6 | 22 | 27.18s | 57.37s | 1:28.15 |  | 3. Roger Pyttel |   East Germany | 2:01.33 |   | +1.95 | 5 | 21 | 27.22s | 57.65s | 1:29.19 |  | 4. Par Arvidsson |   Sweden | 2:01.61 |   | +2.23 | 1 | 18 | 28.13s | 59.07s | 1:30.44 |  | 5. George Nagy |   Canada | 2:01.93 |   | +2.55 | 7 | 21 | 27.77s | 58.79s | 1:30.36 |  | 6. Michael Kraus |   West Germany | 2:01.95 |   | +2.57 | 3 | 22 | 27.61s | 58.15s | 1:29.76 |  | 6. Mikhail Gorelik |   Soviet Union | 2:01.95 |   | +2.57 | 2 | 20 | 28.01s | 58.50s | 1:30.12 |  | 8. Philip Hubble |   Great Britain | 2:02.66 |   | +3.28 | 8 | 18 | 27.88s | 58.63s | 1:30.47 |   
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| World Record: Mike Bruner, United States 1:5.923 (27,32s, 58.10s, 1:28.49) |  | Championship Record: Billy Forrester, United States 2:01.95 (27.79s, 58.76s, 1:30.10) 1975 |   
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 Heats - Wednesday, 23rd August |  | Best 8 times advanced to Final>.  |   
| Heat 4 |   | time |   | gap | L | ag | Rk |  | 2. Roger Pyttel |   East Germany | 2:01.20 |   | +0.03s | - | 21 | 1. |  | 5. Mikhail Gorelik |   Soviet Union | 2:01.52 |   | +0.35s | - | 20 | 2. |  | 7. Par Arvidsson |   Sweden | 2:01.79 |   | +0.62s | - | 18 | 3. |  | 10.Tamas Mikola |   Hungary | 2:03.67 |   | +2.50s | - | 21 | 4. |   
| Heat 3 |   | time |   | gap | L | ag | Rk |  | 4. Steve Gregg |   United States | 2:01.44 |   | +0.27s | - | 22 | 1. |  | 12.Jorge Delgado Jr |   Ecuador | 2:04.43 |   | +3.26s | - | 24 | 2. |  | 12.Claus Bredschneider |   Canada | 2:04.43 |   | +3.26s | - | _ | 2. |   
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| Heat 2 |   | time |   | gap | L | ag | Rk |  | 1. Mike Bruner |   United States | 2:01.17 | CR |   | - | 22 | 1. |  | 3. Michael Kraus |   West Germany | 2:01.37 |   | +0.20s | - | 22 | 2. |  | 6. George Nagy |   Canada | 2:01.62 | NR | +0.45s | - | 21 | 3. |  | 9. Milos Lukasek |   Czechoslovakia | 2:03.06 | NR | +1.89s | - | _ | 4. |   
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| Heat 1 |   | time |   | gap | L | ag | Rk  |  | 8. Philip Hubble |   Great Britain | 2:02.73 |   | +1.56s | - | 18 | 1. |  | 11.Andrey Avtushenko |   Soviet Union | 2:03.78 |   | +2.61s | - | _ | 2. |  | 14.Kees Vervoorn |   Netherlands | 2:04.88 | NR | +3.71s | - | 18 | 3. |   
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