| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | César Cielo - Long course (50 meter pool) |  |  |  |  |
| 3 | Event | Time | Location | Date | Notes |
| 4 | 50 m freestyle | 20.91 | São Paulo | December 18, 2009 | WR |
| 5 | 100 m freestyle | 46.91 | Rome | July 30, 2009 | WR |
| 6 | 50 m butterfly | 22.76 | Rio de Janeiro | April 26, 2012 | AM |
| 7 | 4×50 m freestyle | 1:26.12 | São Paulo | December 19, 2009 | SA |
| 8 | 4 × 100 m freestyle | 3:10.34 | Budapest | July 23, 2017 | SA |
| 9 | 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.