Conversation so far:
What was Mary Decker's career?
Mary Decker was recognized as a world-class runner.
Are there any other interesting aspects about Mary Decker besides being recognized as a world-class runner?
Unable to attend the 1972 Olympics as she was too young, Mary Decker won international acclaim in 1973 with a win in the 800 meters.

Question: When was her first olympics?
Self-contained rewrite: When was Mary Decker's first olympics?