Conversation so far:
Did Caitlyn Jenner have Olympic Success?
Caitlyn Jenner was the American champion in the men's decathlon event in 1974
Did Caitlyn Jenner appear in any magazines?
Caitlyn Jenner was featured on the cover of Track & Field News magazine's August 1974 issue.
Did Caitlyn Jenner set any records?
Caitlyn Jenner's record at the 1975 Pan American Games was followed by new world records of 8,524 points at the U.S.A./U.S.S.R./Poland triangular meet in Eugene.
Did Caitlyn Jenner win any decathlons?
Caitlyn Jenner was the American champion in the men's decathlon event in 1974,
Are there any other interesting aspects about Caitlyn Jenner's Olympic success besides becoming the champion in 1974?
Of the 13 decathlons Caitlyn Jenner competed in between 1973 and 1976, the only loss was at the 1975 AAU National Championships.
Was the 1975 AAU National Championships a devastating loss for Caitlyn Jenner?

Question: What was his personal best?
Self-contained rewrite: What was Caitlyn Jenner's personal best with his Olympic Success?