Question: For the athletes with initial K that had a doping violation in 2007 , what is the birth date of the oldest athlete ?

text: List of doping cases in athletics
K

The use of performance-enhancing drugs (doping) is prohibited within the sport of athletics. Athletes who are found to have used such banned substances, whether through a positive drugs test, the biological passport system, an investigation or public admission, may receive a competition ban for a length of time which reflects the severity of the infraction. Athletes who are found to have banned substances in their possession, or who tamper with or refuse to submit to drug testing can also receive bans from the sport. Competitive bans may also be given to athletes who test positive for prohibited recreational drugs or stimulants with little performance-enhancing effect for competitors in athletics. The sports body responsible for determining which substances are banned in athletics is the World Anti-Doping Agency (WADA). Typically, any athlete who tests positive for banned substances after having served a previous ban receives a lifetime ban from the sport of athletics. Many high-profile sportspeople to receive doping bans have come from the sport of athletics, with significant past cases concerning Ben Johnson, Lance Armstrong, Alberto Contador, Shane Warne, Diego Maradona, Shoaib Akhtar, Marion Jones and Tim Montgomery. Furthermore, a number of athletes who underwent state-sponsored doping programmes in East Germany between the 1960s and 1980s were competitors in athletics, but the quality of the international anti-doping work was so poor that only one East German athlete ever tested positive. Following allegations of state-sponsored doping in Russia, the IAAF suspended the country's athletes from competition, including the 2016 Summer Olympics.
Name Country Event Date of violation Banned substance ( s ) / Anti-doping rule violation Sanction
Robert Kajuga Rwanda Long distance 2015 Refusal 4 years
Abubaker Ali Kamal Qatar Middle distance 2011 EPO 2 years
Pauline Kahenya Kenya Long distance 2013 Prednisone , Prednisolone 1 year
Alissa Kallinikou Cyprus Sprinting 2008 Testosterone 2 years
Tayeb Kalloud Algeria Long distance 2008 Norandrosterone 2 years
Svetlana Kanatova Russia Middle distance
Vladimir Kanaykin Russia Race walking 2008 2011 EPO Biological passport 2 years 8 years
Olga Kaniskina Russia Race walking 2009 Biological passport 3 years and 2 months
Adil Kaouch Morocco Middle distance 2007 EPO 2 years
Anastasiya Kapachinskaya Russia Sprinting 2004 Stanozolol 2 years
Julien Kapek France Triple jump 2009 3 Whereabouts Failures within 18-month period 1 year
Natallia Kareiva Belarus Middle distance 2010 Biological passport 2 years
Halina Karnatsevich Belarus Long distance 2006 Stanozolol 2 years
Yanina Karolchyk-Pravalinskaya Belarus Shot put 2003 Clenbuterol 2 years
Mandeep Kaur India Sprinting 2011 Stanozolol , Methandienone 2 years
Ali Ekber Kayas Turkey Sprinting 2012 Oxandrolone 2 years
Tatyana Kazankina Soviet Union Middle distance 1984 Refusal to submit to doping control 18 months
Héni Kechi France Sprinting 2007 Cannabis 3 months
Lisa Kehler Great Britain Race walking 2007 Terbutaline Public warning
Naman Keïta France Hurdling , sprinting 2007 Testosterone precursors 2 years