Brazilian swimmer Cesar Cielo set the 100-metre freestyle world record of 46.91 seconds in 2009.
Notes on verification
Multiple independent authoritative sources (Olympedia, Wikipedia, Olympics.com, SwimSwam) confirm the exact time, date, and location of the record. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.867 clusters=3 claim_tier=notable | framework convergence=partial on Official swimming world record ratification by FINA (now World Aquatics) (upstreams: FINA/World Aquatics official records, Olympedia database) — publishers independent, evidence may not be | kind=empirical eligibility=high]
Sources
- The science games — ABC Science Archive (seed:sports_and_combat)
- https://www.olympedia.org/athletes/115648 (corroboration)
- https://www.olympics.com/en/athletes/cesar-cielo-filho (corroboration)
- https://swimswam.com/david-popovici-goes-46-86-breaks-cielos-13-year-old-100-free-world-record/ (corroboration)