The facts
Douglass won the 31 October 100m freestyle final in 49.64, marked WR, lowering her listed previous best of 49.93 from October 2025. [6][9]
Curzan won the 30 October 100m backstroke in 53.92, marked WR. The official sheet lists Regan Smith’s previous 54.02 record. [7][9][10]
Alexy won the 30 October men’s 100m freestyle in 44.64, marked WR, below the previous joint 44.84 mark of Kyle Chalmers and Egor Kornev. [8][10]
Omega's women's 50m backstroke final result lists Berkoff first in 25.21 seconds, marked WR, ahead of the previous 25.23 record set by Regan Smith in December 2024. [1][4][5]
Mathias won the men's 100m breaststroke in 55.14 seconds, marked WR on the official sheet. It lists the previous record as Ilya Shymanovich's 55.28 from November 2021. [2][4][5]
The official women's 50m freestyle result lists Douglass at 22.75 seconds, marked as equalling Gretchen Walsh's record from 16 October 2026. NBC Sports and Yahoo's prose reports give 22.83; this article uses the official timing sheet's 22.75 figure. [3][4][5]
The trials were held from 28 to 31 October in Westmont. The World Short Course Championships are scheduled for 1–6 December in Beijing. [6][7][8][9]
Relevant context
Short-course swimming uses 25-metre pools; Olympic swimming uses 50-metre pools. These performances are not long-course or Olympic records. [4]
Still unconfirmed
- The reason for the reported Douglass time discrepancy and separate governing-body ratification were not established.
Corrections & updates
Update, 1 November: added the completed 30 October Curzan and Alexy world-record swims and the 31 October Douglass 100m freestyle result, checked against actual OMEGA final sheets and independent reporting. Preserved the original 29 October results, identity, publication date and disclosed Douglass 50m timing discrepancy. Record annotations are not a claim of separate governing-body ratification.
Sources
References support the numbered facts above. Source checks: 1 Nov 2026, 05:09 UTC.
Actual official final sheets establish each performance and its record annotation; NBC and separately owned SwimSwam corroborate the added races. The earlier 29 October results and disclosed 50m freestyle timing discrepancy remain in the article. Each race’s local date is stated separately. No separate governing-body ratification notice was checked.
- Women's 50m backstroke final — 29 October 2026, official results
OMEGA official timekeeping · Primary source · 29 Oct 2026
Actual one-page result text read through the research browser: Berkoff25.21WR; priorSmith25.23. Initial native timing-page request timed out; linked official PDF was then opened successfully.
- Men's 100m breaststroke final — 29 October 2026, official results
OMEGA official timekeeping · Primary source · 29 Oct 2026
Actual official result text read: Mathias55.14WR; priorShymanovich55.28.
- Women's 50m freestyle final — 29 October 2026, official results
OMEGA official timekeeping · Primary source · 29 Oct 2026
Actual official result text read: Douglass22.75=WR, with Walsh22.75 dated16 October 2026 in the record header. This conflicts with22.83 in the independent reports and is explicitly distinguished.
- Kate Douglass, Katharine Berkoff, Van Mathias swim world records at short course trials
NBC Sports / NBCUniversal · Reporting · 29 Oct 2026
Nick Zaccardi's actual report read; separately owned from OMEGA and Yahoo. It corroborates the two new record times and the tie, but gives a different Douglass time.
- Douglass ties, Berkoff and Mathias break world records at U.S. short course world trials as Caeleb Dressel wins twice
Yahoo Sports · Reporting · 30 Oct 2026
Griffin Hadley's own report read; separately owned from NBC. It reports the same performances and22.83 for Douglass, not the official sheet's22.75.
- Women’s 100m freestyle final, 31 October 2026
OMEGA official timekeeping · Primary source · 31 Oct 2026
- Women’s 100m backstroke final, 30 October 2026
OMEGA official timekeeping · Primary source · 30 Oct 2026
- Men’s 100m freestyle final, 30 October 2026
OMEGA official timekeeping · Primary source · 30 Oct 2026
- Kate Douglass lowers her 100m freestyle world-record time
NBC Sports / NBCUniversal · Reporting · 31 Oct 2026
Nick Zaccardi’s actual completed-meet report was read.
- 2026 US short-course world trials: Day 3 finals recap
SwimSwam · Reporting · 30 Oct 2026
Madeline Folsom’s actual final tables and reporting were checked against the official results. Reader comments and previews were not evidence.