LAUSANNE, Switzerland -- Olympic finalist Bralon Taplin lost his appeal against a four-year ban for dodging a doping test, and will miss the Tokyo Games and the next two track and field world championships.
The Court of Arbitration for Sport on Tuesday said its judge found Taplin's explanation "to be implausible" that he was never approached or chaperoned to give a sample after winning an April 2019 race in Grenada.
The judge "was comfortably satisfied that the athlete was guilty of the offense of evading sample collection," the court said in a statement.
Taplin, 28, a former NCAA relay champion running for Texas A&M University, is banned until Sept. 24, 2023.
Taplin finished seventh in the 400 final running for Grenada at the 2016 Rio de Janeiro Olympics, and is the eighth-fastest man on the all-time list at 400 indoors.
The CAS judge upheld a ruling by the Caribbean anti-doping organization. It found Taplin was told by a chaperone during track-side media interviews in Grenada that he was needed to give a sample.
The Florida-born athlete's defense was "he had not been properly notified that he had been selected for the doping control test," the court said.
The CAS statement said Taplin "subsequently left the stadium [and] on the following day, he took an early flight home and left the country."
He will miss major athletics meets in each of the next three years: The postponed Tokyo Olympics in 2021, the worlds at Eugene, Oregon, also postponed one year to 2022, and the 2023 worlds in Budapest, Hungary.