Kaii Winkler Breaks Steffen Deibler’s German National Record With 50.92 100 Butterfly

2026 Indianapolis Pro Series

• June 17-20, 2026
• Indianapolis, IN
• LCM (50 meters)
• Meet Central
• Psych Sheets
• Live Results
• Live Stream: USA Swimming Network (Downloadable App)
• Live Recap:
  • Prelims: Day 1 | Day 2
  • Finals: Day 1 | Day 2

Men’s 100 Butterfly

• World Record: 49.45 – Caeleb Dressel, USA (2021)
• American Record: 49.45 – Caeleb Dressel, USA (2021)
• U.S. Open Record: 49.76 – Caeleb Dressel, USA (2021)
• Pro Series Record: 50.42 – Ilya Kharun, CAN (2025)

Top 8: 

1. Ilya Kharun (SUN) – 50.61
2. Kaii Winkler (NCS) – 50.92
3. Dare Rose (SCAR) – 52.74
4. Thomas Heilman (CA-Y) – 51.94
5. Dylan Carter (AZFL) – 52.15)
6. Maxim Skazobtsov (TAC) – 52.49
7. Ole Eidam (MICH) – 52.64
8. Matthew Klinge (OSU) – 53.56

Kaii Winkler swam to a new German National Record in the men’s 100 butterfly on Thursday night, touching in a 50.92 for 2nd behind Ilya Kharun’s 50.61. Winkler broke the previous record of a 51.19 set by Steffen Deibler back at the 2013 German Championships.

The record had stood as the 2nd oldest remaining individual record on the men’s side in long course, only sitting behind Paul Biedermann‘s 1:42.00 200 free from the 2009 World Championships that still sits as the World Record.

Split Comparison

Winkler was faster than Deibler was on both 50’s, although the first 50 saw a greater difference. Winkler dropped over half a second off his previous lifetime best of a 51.51 that he swam at the US Open back in December as well as at US Olympic Trials back in 2024.

The swim marks Winkler’s first individual German National Record as he has previously been a member of the record setting SCM Men’s 4×200 free relay from the 2024 World Championships. Winkler swam at 2024 US Olympic Trials and then represented Germany at the 2024 Paris Olympics as he has dual citizenship.