César Cielo
Long course (50 meter pool)

Event
Time
Location
Date
Notes
50 m freestyle
20.91
São Paulo
December 18, 2009
WR
100 m freestyle
46.91
Rome
July 30, 2009
WR
50 m butterfly
22.76
Rio de Janeiro
April 26, 2012
AM
4×50 m freestyle
1:26.12
São Paulo
December 19, 2009
SA
4 × 100 m freestyle
3:10.34
Budapest
July 23, 2017
SA
4 × 100 m medley
3:29.16
Rome
August 2, 2009
SA

Question: What did César Cielo achieve in 50m butterfly?
Answer: On April 26, 2012, César Cielo achieved the Americas record in the 50-metre butterfly, with a time of 22.76 seconds in Rio de Janeiro.