Lance Armstrong stepped down as chairman of his Livestrong cancer charity yesterday as Nike broke all ties with the disgraced star over "seemingly insurmountable evidence" of doping.
Both developments came as the International Cycling Union (UCI) faced growing pressure to reveal how the 41-year-old, seven-time Tour de France champion had been able to escape detection for doping for so long.
In a statement on Livestrong's website, cancer survivor Armstrong said he would "conclude my chairmanship ... to spare the foundation any negative effects as a result of controversy surrounding my cycling career.
Separately, sportswear giant Nike - a major sponsor that had stuck firmly by Armstrong for months in the face of doping allegations - issued a statement that accused him of years of deception.
"Due to the seemingly insurmountable evidence that Lance Armstrong participated in doping and misled Nike for more than a decade, it is with great sadness that we have terminated our contract with him," it said.
It added: "Nike plans to continue support of the Livestrong initiatives created to unite, inspire and empower people affected by cancer."