2025 World Championships
- July 27 – August 3, 2025 (pool swimming)
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Poland’s Krzysztof Chmielewski made waves in the 200 fly, shattering a 14-year-old national record in the event en route to qualifying 2nd for the semifinals of the event.
Chmielewski blasted into the wall in 1:52.89 this morning, blowing both his previous lifetime best and the previous Polish record out of the water. Prior to his swim, the record stood at 1:53.23, set back in 2009 by Pawel Korzeniowski.
Chmielewski’s performance shaved .34 off of the record, lowering the standard below the 1:53 barrier for the first time, and marked a new personal best time by .73.
This morning’s race saw Chmielewski take it out fast in 53.89, almost half a second faster than the opening 100 of Korzeniowski’s record-setting swim. He stayed well ahead of the Polish record pace for the first 150 meters, with his first three 50 splits all being faster than Korzeniowski’s.
Split Comparison
| Chmielewski (New Record) | Korzeniowski (Old Record) | Chmielewski (Old Lifetime Best) | |
| 50 | 25.27 | 25.52 | 25.65 |
| 100 | 53.89 (28.62) | 54.38 (28.86) | 54.33 (28.68) |
| 150 | 1:22.95 (29.06) | 1:23.50 (29.12) | 1:23.78 (29.45) |
| 200 | 1:52.89 (29.94) | 1:53.23 (29.73) | 1:53.62 (29.84) |
Chmielewski logged the 2nd-fastest swim this morning, just behind TeamUSA’s Luca Urlando who took 1st in 1:52.71. The pair were the only two swimmers to post sub-1:53 performances in prelims.
Chmielewski will take on the 200 fly again in the semifinals tonight.
