Controversial  American  sprinter  and  world  champion  Justin  Gatlin  was  among  the    athlete  who  was  visited  the  most  times  in  2017  by  the  United  States  Anti-Doping Association (USADA) officials.

Gatlin  who  won the Men’s  100  metres  IAAF World  Championships  gold  medal  in  London  was  visited  13  times  by USADA  officials, while 110  metre hurdles   world  record  holder Aries  Merritt  had  14  visits  from the  doping  officials.

Galen Rupp, who won the Chicago Marathon and was second at the Boston marathon last year was the most tested American marathon runner.

He  was  tested  16  times  by USADA during the 12-month period…………… the most-tested female runners were new  York City  marathon  winner  Shalane Flanagan   and  national  800  metres  record  holder Ajee’ Wilson…………both  were  tested  12  times  each  by  USADA.

Athletes are also tested throughout the year by other authorities, such as the Sport’s  governing  body  the  IAAF………   those statistics are not available to the public, though some runners have published them independently, such as  world  champion   in the  steeplechase  Emma Coburn  who  revealed  that  she  had  11  out  of  competition  tests  in  2017.