I was on a race yesterday and I have a question about fair yielding. I was riding down single track and approaching a rider, I caught the rider on the DH and was trying to make a pass. I called out "rider up" he didn't reply until I asked several times can I pass, as not to endanger him. His reply was no you can't pass here, during these times there were places a pass would have been fair, safe, and ok to do but I was hesitant because there was no communication. I know we yield to uphill cyclists but who has the right in the downhill?