Nicholas Santos

2001–2004

His first participation in the World Championships was in the 2001 World Aquatics Championships in Fukuoka, where he finished 30th in the 50-metre freestyle.

In November 17, he broke the short-course South American record of the 50-metre butterfly, with a time of 23.82 seconds.

At the 2002 FINA World Swimming Championships (25 m) in Moscow, Nicholas finished 23rd in the 50-metre freestyle and 13th in the 50-metre butterfly.

He swam at the 2002 Pan Pacific Swimming Championships, where he finished 9th in the 50-metre freestyle.

Participating in the 2003 World Aquatics Championships in Barcelona, Nicholas finished 40th in the 50-metre butterfly.

On September 10, 2004, Santos broke the short-course South American record of the 50-metre freestyle with a time of 21.32 seconds, coming close to beat the World Record that belonged to Frédérick Bousquet with 21.10 seconds.

At the 2004 FINA World Swimming Championships (25 m) in Indianapolis, Nicholas Santos won the silver medal in the 4 × 100-metre freestyle and bronze in the 50-metre freestyle. He also participated in the 50-metre butterfly, where he was disqualified, and the 100-metre freestyle, where he was in the finals, placing 8th.

2005–2008

At the 2005 Summer Universiade, Nicholas won a bronze medal in the 50-metre freestyle and in the 50-metre butterfly.

Santos swam at the 2006 Pan Pacific Swimming Championships, where he finished 10th in the 50-metre freestyle.

At the 2007 Pan American Games in Rio de Janeiro, he became champion in 4 × 100-metre freestyle, with a new Pan-American record made by the Brazilian team: 3:15.90, and was also a silver medalist in the 50-metre freestyle, with a time of 22.18 seconds.

Nicholas competed in the 2007 Summer Universiade, where he won a gold medal in the 50-metre freestyle and a silver medal in the 50-metre butterfly. He broke the competition record in the 50-metre freestyle, with a time of 22.12 seconds.

2008 Summer Olympics

Nicholas participated in the 2008 Summer Olympics in the 50-metre freestyle, where he reached the semi-finals, finishing in 16th position.

2009–2012

In May 10, 2009, he broke the South American record in the 4 × 100-metre freestyle, with a time of 3:14.45, along with Nicolas Oliveira, César Cielo, and Fernando Silva.

At the 2009 World Aquatics Championships in Rome, he qualified for the 50-metre butterfly finals, finishing in 5th place. He also reached the semi-finals of the 50-metre freestyle, with a time of 21.69 seconds, and finished in 10th place. On September 2, 2009, at the end of the José Finkel Trophy, he won with a time of 21.55 seconds, surpassing his personal best.

In September 4, 2009, he broke the Americas record for the 50-metre butterfly, with a time of 22.87 seconds. This record was broken by César Cielo just three years later, with a time of 22.76 seconds.

In November 15, 2009, in short pool (25 m), he completed the 50-metre freestyle in 20.90 seconds and became the first South American to swim the distance under 21 seconds. He shared with César Cielo the short-course South American record in the 50-metre freestyle: 21.32 seconds. He established the time in 2004 and Cielo in 2008.

He was champion of the 2009 FINA Swimming World Cup at the Singapore step in November 2009, beating the Olympic Champion Roland Schoeman in the finals of both the 50-metre butterfly and the 50-metre freestyle. At this World Cup, he broke the South American record of the 50-metre butterfly with a time of 22.17 seconds in Berlin and 22.16 seconds in Singapore and the South American record of the 50-metre freestyle with a time of 20.74 seconds in Berlin.

In August 2010, at the 2010 Pan Pacific Swimming Championships in Irvine, California, United States, Nicholas earned the silver medal in 50-metre butterfly. He also finished 13th in the 50-metre freestyle.

In December 2010, at the 2010 FINA World Swimming Championships (25 m) in Dubai, Nicholas Santos, along with César Cielo, Marcelo Chierighini, and Nicolas Oliveira, won the bronze medal in the 4 × 100-metre freestyle with a time of 3:05.74, South American record, leaving behind the American team. Nicholas also got the 13th place in the 50-metre freestyle and 4th place in the 50-metre butterfly.

At the 2011 Pan American Games in Guadalajara, Nicholas won the gold medal in the 4 × 100-metre freestyle.

In April 2012, he improved his personal best in 50-metre butterfly to 22.79 seconds.

2012 Summer Olympics

He participated in 2012 Summer Olympics in London, in the 4 × 100-metre freestyle, where he finished in 9th place.

2012–2016

In December 2012, already 32 years old, Nicholas Santos attended the 2012 FINA World Swimming Championships (25 m) in Istanbul and won the gold medal in the 50-metre butterfly with a time of 22.22 seconds, beating the Championship record.

At the 2013 World Aquatics Championships in Barcelona, Santos qualified to the 50-metre butterfly finals in the first place, with a time of 22.81 seconds. In the finals, his time worsened to 23.21 seconds, finishing in 4th place. In the 4 × 100-metre medley, he finished 12th, along with Leonardo de Deus, Felipe Lima, and Marcelo Chierighini.

At the 2013 FINA Swimming World Cup in Beijing, China, Santos broke the short-course South American record in the 50-metre butterfly, with a time of 22.13.

At the 2014 Pan Pacific Swimming Championships in Gold Coast, Queensland, Australia, he finished 8th in the 100-metre butterfly, and 16th in the 50-metre freestyle.

At the 2014 FINA World Swimming Championships (25 m) in Doha, Qatar, Santos won two gold medals on the same day. At 4 December, in the Men's 4 × 50 metre medley relay, formed by Santos, César Cielo, Felipe França Silva and Guilherme Guido, considered the "Dream Team" by Cielo (formed only by medalists or world champions in their respective individual events), Brazil won the gold shattering the world record with a time of 1:30.51. At the same day, he also won the gold medal in the 4 × 50 metre mixed medley relay, along with Felipe França Silva, Etiene Medeiros and Larissa Oliveira, breaking the South American record with a time of 1:37.26, only 0.09 seconds from beating USA's world record (1:37.17). Santos was also trying to defend his title in the Men's 50 metre butterfly, obtained in Istanbul 2012. In the final, he faced Chad le Clos, the world's best butterfly swimmer at the time, World and Olympic champion. Santos broke the Americas record, with a time of 22.08, but lost the gold to the South African, who broke the Championship record, with a time of 21.95. Santos also swam the Men's 100 metre butterfly, finishing in 14th place.

At the 2015 Pan American Games in Toronto, Ontario, Canada, Santos finished 10th in the 50-metre freestyle.

At the 2015 World Aquatics Championships in Kazan, Santos, 35 years old, won one of the most important medals in his career, the silver medal in the Men's 50 metre butterfly. He became the oldest medalist in the history of the World Championships - aged 35 years and 171 days old, broke the record of Mark Warnecke, gold medalist of the 50 breaststroke at Montreal 2005, which took the podium at 35 years and 162 days old.

2016–20

At the 2016 FINA World Swimming Championships (25 m) in Windsor, Ontario, Canada, he won a silver medal at the 4 × 50 metre mixed medley relay, along with Etiene Medeiros, Larissa Oliveira and Felipe Lima. He also finished 9th in the Men's 50 metre butterfly and 32th in the Men's 50 metre freestyle.

At the age of 37, at the Maria Lenk Trophy held in May 2017, he was able to beat the Americas record in the 50m butterfly, with a time of 22.61, being close to the world record of 22.43 did by Rafa Muñoz, at the super-suits era.

At the 2017 World Aquatics Championships in Budapest, in the Men's 50 metre butterfly, he won again the silver medal, with a time of 22.79. He broke a record that was his own: the oldest athlete in history to win a medal in the World Championships.

Records

Nicholas Santos is the current holder, or former holder, of the following records:

Long course (50 m):

Short course (25 m):