Tour leader Contador apologizes to Schleck
During Monday's stage, Schleck's chain came off and Contador kept riding, rather than waiting in accordance with race etiquette.
In a video posted on YouTube, Contador said: "Maybe I made a mistake. I'm sorry. I don't like things like what happened today, I'm not like that and I hope the relationship that I have with Andy can go back to being as good as it was before this happened."
Contador initially insisted he hadn't seen that Schleck had a problem.
The tour continues Tuesday with the 16th stage.