Thiago Pereira
Long course (50 meter pool)

Time
Date
Notes
2:02.67
July 24, 2003
SA
2:02.31
August 17, 2003
SA
2:00.19
March 27, 2004
SA
1:59.92
May 9, 2004
SA
1:59.48
June 12, 2004
SA
1:59.19
February 22, 2007
SA
1:58.65
March 28, 2007
SA
1:58.64
May 6, 2007
SA
1:57.79
July 20, 2007
SA
1:57.66
July 29, 2009
SA
1:57.35
July 29, 2009
SA
1:55.55
July 30, 2009
SA

Question: How did Thiago Pereira get sub-2 in the long course (50 meter pool)?
Answer: Thiago Pereira broke the South American record two more times, with times of 1:59.92 and 1:59.48.