Steffen Deibler (born 10 July 1987) is a German former competitive swimmer from Biberach an der Riß.^[1] From 2009 to 2018 he was the world record holder for the 50 m butterfly (short course).

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Steffen Deibler

Deibler in 2008
Personal information
Nationality	Germany
Born	(1987-07-10) July 10, 1987 (age 36) Biberach an der Riß, West Germany
Height	1.86 m (6 ft 1 in)
Weight	81 kg (179 lb)
Sport
Sport	Swimming
Strokes	Butterfly, freestyle
Club	Hamburger Schwimm-Club
Medal record World Championships (SC) 2010 Dubai 50 m butterfly European Championships (LC) 2012 Debrecen 4×100 m medley European Championships (SC) 2005 Trieste 4×50 m medley 2007 Debrecen 4×50 m medley 2010 Eindhoven 50 m freestyle 2010 Eindhoven 50 m butterfly 2010 Eindhoven 100 m butterfly 2010 Eindhoven 4×50 m medley 2005 Trieste 100 m freestyle 2010 Eindhoven 4×50 m freestyle 2013 Herning 4×50 m mixed medley 2013 Herning 50 m butterfly 2007 Debrecen 4×50 m freestyle 2011 Szczecin 4×50 m medley 2013 Herning 100 m butterfly 2013 Herning 4×50 m medley

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Deibler specialized in short distances in the butterfly and freestyle. He graduated in 2007 at Pestalozzi-Gymnasium Biberach and started to study environment engineering in October 2008. As a teenager, Deibler trained at the TG Biberach under coach Gerold Seifert. The study was the reason to change is training base to Hamburg. At the 2008 German swimming championships, he won 50 m and 100 m freestyle and qualified for the 2008 Summer Olympics. He was second behind Paul Biedermann in the 200 m freestyle. In November 2009, Deibler set a new 50 meter butterfly short course world record in Aachen, with a time of 22.06, beating the previous record of Amaury Leveaux by 0.12 seconds. At the FINA World Cup 2009 in Berlin, he became the first person to swim 50 m butterfly within 22 seconds in a 25 m pool, when he improved his world record to 21.80 seconds.

At the 2008 Summer Olympics, Deibler finished in 38th, 33rd and 15th place in the 50 m, 100 m, and 4 × 100 m freestyle events. He improved at the 2012 Olympics, finishing fourth in the 100 m butterfly and sixth in the 4 × 100 m medley relay.^[1] At the 2016 Summer Olympics in Rio de Janeiro, he competed in the 100 m butterfly where he finished 18th in the heats and did not qualify for the semifinals.^[2] He also competed as a member of the 4 x 100 m medley relay team that finished in 7th place.^[3]

European Junior Swimming Championships 2004 in Lisbon:

• 2nd place in the 4 × 100 m freestyle relay

European Junior Swimming Championships 2005 in Budapest:

• 1st in the 50 m freestyle (0:22.26 min)
• 1st in the 100 m freestyle (0:49.26 min)
• 1st in the 4 × 100 m freestyle
• 1st in the 4 × 100 m medley swimming

European Short Course Swimming Championships 2005 in Trieste:

• 1st in the 4×50 m medley swimming
• 2nd in the 100 m freestyle 0:47.43 min)
• 4th in the 50 m freestyle (0:21.56 min)

European Short Course Swimming Championships 2007 in Debrecen:

• 1st in the 4×50 m medley swimming
• 3rd in the 4×50m freestyle

German swimming championships 2008 in Berlin

• 1st in the 100 m freestyle (0:48.55 min – German record – qualification for the 2008 Summer Olympics)

Aachener Schwimmfest 2009 in Aachen:

• 50 m butterfly (00:22.06 min) world record

World cup Berlin 2009:

• 1st in the 50 m butterfly (00:21.80 min) world record
• 2nd in the 100 m butterfly (00:49.23 min)
• 3rd in the 50 m freestyle (00:20.73 min)

Key: WR = World record

His younger brother Markus also competed in swimming at the 2008 and 2012 Olympics.^[1]