| Rank | Event | Year | Location | Result |
| Olympic Games | ||||
| 5 | 100m Freestyle | 2008 | Beijing, CHN | 54.06 |
| Semifinal | 50m Freestyle | 2008 | Beijing, CHN | 24.86 |
| Semifinal | 100m Butterfly | 2008 | Beijing, CHN | 59.29 |
| Heats | 50m Freestyle | 2004 | Athens, GRE | 25.95 |
| Heats | 100m Freestyle | 2004 | Athens, GRE | 56.17 |
| Heats | 4 x 100m Medley Relay | 2004 | Athens, GRE | 4:08.89 |
| World Championships | ||||
| 1 | 100m Freestyle | 2011 | Shanghai, CHN | 53.45 |
| 6 | 50m Freestyle | 2011 | Shanghai, CHN | 24.67 |
| 7 | 100m Freestyle | 2009 | Rome, ITA | 53.70 |
| 8 | 4 x 100m Freestyle Relay | 2011 | Shanghai, CHN | 3:39.74 |
| Semifinal | 50m Butterfly | 2011 | Shanghai, CHN | 26.53 |
| Semifinal | 100m Butterfly | 2011 | Shanghai, CHN | 58.24 |
| Semifinal | 50m Freestyle | 2009 | Rome, ITA | 24.62 |
| Semifinal | 50m Butterfly | 2009 | Rome, ITA | 25.90 |
| Semifinal | 100m Butterfly | 2009 | Rome, ITA | 57.65 |
| Heats | 4 x 100m Medley Relay | 2011 | Shanghai, CHN | 4:01.60 |
| Heats | 4 x 100m Medley Relay | 2009 | Rome, ITA | 3:58.93 |
| European Championships | ||||
| 2 | 50m Butterfly | 2010 | Budapest, HUN | 25.69 |
| 4 | 100m Butterfly | 2010 | Budapest, HUN | 58.21 |
| 4 | 4 x 100m Medley Relay | 2010 | Budapest, HUN | 4:04.81 |
| 6 | 50m Freestyle | 2010 | Budapest, HUN | 24.96 |
| World Championships Short Course | ||||
| 3 | 50m Butterfly | 2010 | Dubai, UAE | 25.24 |
| 6 | 100m Butterfly | 2010 | Dubai, UAE | 56.67 |
Nickname
Janet. (svoem.dk, 09 Jul 2008)
Hobbies
Interior design, fashion. (ol.dk, 01 Jan 2011)
Occupation
Athlete
Family
Husband Bobby William Gray
Language(s) spoken
Danish, German, English
Club name
KVIK Kastrup, Copenhagen, DEN
Coach
Per Holmquist, Paulus Wildeboer [national] (DEN) (jeanetteottesen.dk, 22 May 2011)
Debut
2001 for Spain (jeanetteottesen.dk, 29 Oct 2010)
Injuries
She fractured a rib in 2005 which kept her out of the water for three months. (svoem.dk, 09 Jul 2008)
Additional information
Start of sporting career
She started swimming at age 12 in Lyngby, Denmark. (jeanetteottesen.dk, 29 Oct 2010)
Reason for taking up this sport
She had been dancing for 10 years and just needed to try something else, and her sister was also a swimmer. (svoem.dk, 09 Jul 2008)
Hero
Dutch swimmer Inge de Bruin. (svoem.dk, 09 Jul 2008)
Most influential person in career
Danish swimmer Mette Jacobsen. (svoem.dk, 09 Jul 2008)
Sporting philosophy / motto
"You can't win and lose with the same state of mind." (svoem.dk, 09 Jul 2008)
Previous Olympics
Beijing 2008, Athens 2004
