Sports Iditarod disqualifies four-time champ Lance Mackey from this year’s race after positive meth test May 9, 2020 Steve Gardner, USA TODAY Comments Off on Iditarod disqualifies four-time champ Lance Mackey from this year’s race after positive meth test Four-time Iditarod champion Lance Mackey is seeking treatment after his 21st-place finish in 2020 race is vacated because of a positive meth test.