Karel Tammjärv
Karel Tammjärv is an Estonian cross-country skier who has competed since 2007. At the 2010 Winter Olympics in Vancouver, he finished 46th in the 30 km mixed pursuit and 67th in the 15 km events. He also represented Estonia at the 2014 Winter Olympics and 2018 Winter Olympics.
Tammjärv's best World Cup finish was 10th in a 4 x 7.5 km relay at France in 2016 while his best individual finish was 13th in a 15 km event at Switzerland in 2017.
In February 2019, he was arrested for allegations of blood doping and subsequently admitted to having doped since 2016.
