Despite rumors that Americans Floyd Landis and Lance Armstrong were to attend this weekend’s start of the Tour de France, neither is expected to show up.

Landis is in the U.S. on a tour promoting his new book, “Positively False,” and is refusing interview requests from cycling media. He also is awaiting a ruling on charges that he doped en route to winning last year’s Tour. A decision from the three-member arbitration panel is expected in the coming weeks.

Discovery Channel officials confirmed that Armstrong will not be in London this weekend.