Silence-Lotto fired Dutchman Thomas Dekker on Wednesday after counter-analysis results confirmed he used blood booster Erythropoietin (EPO).
"We already had him on non-active status," Team Manager Marc Sergeant told HLN.be. "After the second opinion showed he used banned products, it is over for us and we are finally dismissing him."
An anti-doping laboratory in Cologne, Germany, found Dekker positive June 20 based an out-of-competition control taken in December 2007. It released the positive result prior to the Tour de France this year, where Dekker was to support Cadel Evans.
Dekker, 25, rode for the Netherlands' Rabobank at the time of the test. He left the Dutch squad last August and joined Sergeant's Silence-Lotto at the start of this season.
Team Silence-Lotto suspended Dekker July 1 after the lab released the initial results. Dekker requested counter-analysis and promised to clear his name.
On Wednesday, he said that he had made a one-time mistake and confirmed the positive counter-analysis result in a press release. Dekker also said that he wants to return to cycling to prove he achieved his past results because of his talent and his teams' help. He is a two-time Dutch time trial champion and winner of the 2006 Tirreno-Adriatico and 2007 Tour de Romandie.
Dekker faces a likely two-year suspension before he can return.
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