Athlete, a
sportsperson, a person who participates regularly in a sport.
Sport, an activity that is governed by a set of rules or customs and often engaged in competitively. A decently comprehensive
list of sports can be easily found. Cycling, of course, is one of them.
Win arguments by through research. When in doubt, remain silent, research, and then come back to the topic at hand with a closing statement. Avoid further diatribe: remember you came with a *closing statement*, end of the matter.