2019 FINA WORLD AQUATICS CHAMPIONSHIPS
- All sports: Friday, July 12 – Sunday, July 28, 2019
- Pool swimming: Sunday, July 21 – Sunday, July 28, 2019
- The Nambu University Municipal Aquatics Center, Gwangju, Korea
- Meet site
- Competition Schedule
- FinaTV Live Stream
- Entry Lists
- Results
For the second consecutive medley relay final Caeleb Dressel produced the fastest butterfly split in history.
The 22-year-old popped off a 49.33 in the mixed event, overtaking the previous all-time mark of 49.72 done by Michael Phelps in 2009, and then tonight in the men’s race hit 49.28.
ALL-TIME 100 FLY RELAY SPLITS
- Caeleb Dressel (USA), 49.28 – 2019
- Caeleb Dressel (USA), 49.33 – 2019
- Michael Phelps (USA), 49.72 – 2009
- Caeleb Dressel (USA), 49.76 – 2017
- Caeleb Dressel (USA), 49.92 – 2017
- Chad Le Clos (RSA), 50.10 – 2018
- Michael Phelps (USA), 50.15 – 2008
- Andrew Lauterstein (AUS) / Gabriel Mangabeira (BRA), 50.16 – 2009
- –
- Ian Crocker (USA), 50.28 – 2004
Comparing the reaction times of each of Dressel’s sub-50 splits, he was slightly slower here than he was on the mixed relay, but still better than both in 2017.
| Dressel, 2017 Mixed | Dressel, 2017 Men’s | Dressel, 2019 Mixed | Dressel, 2019 Men’s |
| r: 0.42 | r: 0.47 | r: 0.28 | r: 0.34 |
| 23.10 | 22.80 | 22.83 | 22.83 |
| 26.82 | 26.96 | 26.50 | 26.45 |
| 49.92 | 49.76 | 49.33 | 49.28 |
His back half of 26.45 is the fastest he’s ever been (including individually), overtaking his 26.50 from the mixed event.
The former Florida Gator set the world record in the individual 100 fly on Friday in the semi-finals, clocking 49.50 to take out Phelps’ mark of 49.82, and then won the final in 49.66.
For fun, if we look at his ‘through the water’ times, subtracting the reaction time off each swim, this one falls just 0.05 shy of his world record (see times at the bottom).
| Dressel, 2017 Mixed Relay | Dressel, 2017 Men’s Relay | Dressel, 2019 Mixed Relay | Dressel, 2019 Men’s Relay | Dressel, 2017 Final | Dressel, 2019 Semis | Dressel, 2019 Final |
| r: 0.42 | r: 0.47 | r: 0.28 | r: 0.34 | r: 0.64 | r: 0.61 | r: 0.61 |
| 23.10 | 22.80 | 22.83 | 22.83 | 23.31 | 22.83 | 23.09 |
| 26.82 | 26.96 | 26.50 | 26.45 | 26.55 | 26.67 | 26.57 |
| 49.92 | 49.76 | 49.33 | 49.28 | 49.86 | 49.50 | 49.66 |
| 49.50 | 49.29 | 49.05 | 48.94 | 49.22 | 48.89 | 49.05 |
Despite Dressel’s splits, the Americans didn’t win gold in either relay.
The Australians topped them in the mixed event, and on day eight the British men got by them with a huge 46.14 anchor from Duncan Scott which stands up as the second-fastest free leg in history.
They set a new European Record in 3:28.10, with the U.S. team of Ryan Murphy, Andrew Wilson, Dressel and Nathan Adrian settling for silver in 3:28.45. This was just the second time the Americans have lost the relay without getting disqualified.
Ian Crocker 50.2 in 2004 wow
I know this isn’t really physically possible, but if you take the fastest 50 in history (Govorov 22.27) and have the fastest possible reaction time- and then add the 26.34 Phelps back half from Quebec (the fastest I’ve heard of), you get
22.27, .61 reaction time, and -.03 is allowed in relays.
22.27-0.64=21.63
21.63+26.34=47.97
Might be the physical, absolute max with a full body suit
What.
The way they subtracted Dressel’s reaction times to get 48.8, I did that but with the fastest first and last 50 in history
With the way records keep creeping down, this will probably be the record in 2060(ish).
Does this mean Phelps still owns the fastest second fifty of all time with his 50.45 (24.10/26.35) 100m Fly from 2015 US Nationals?
That is the fastest back half to my knowledge, yes.
Phelps was actually 24.14/26.34 (50.48) at the 2009 Quebec cup challenge meet, which I’m pretty sure is the fastest back half.
Good find 👏
But can he split 46.1 in the free???????
Lol
At the flags, yes. To the wall, no.
Wow with a .34 reaction. He’ll be under 49 in no time
I like my heroes to throw down the fastest split in history
Only if they win gold, sweetheart.
Charmin
Faster than Phelps ever swam
Lost the race with that poor exchange.
You’re truly talented, I gotta give it to ya. Impressed that you found a way to blame him for that relay loss