"Most fighters get ready for a fight, some get ready for their fight, and a few get ready for their opponent"
Translating fighter back to the combat sports arena, the ones that do well, prepare. If they have a fight, "champ or chump" you put in your conditioning, technique, sparring, and mental preparation (among other things). They are getting ready for a fight, but they don't always get ready for their fight. Yes the physical and mental preparation is there, but is it specifically planned and targeted for the event they plan to compete at. A tournament is different from a single fight, a ring is not a cage, being in shape and being in fight shape are two completely different worlds, at home or away is not just a change in scenery. Any fight has Their Fighter and The Opponent, and most promoters want Their Fighter to win, know which one you are. More importantly, getting ready for your fight is not enough, you must be ready for your opponent. This means research, watching tape, and discussing what others see in your opponents game, stacking your strengths and weaknesses against their opponent's. A fighter has to beat their opponent to win the fight, not the other way around. Knowledge of your opponent leads to a sound game plan and mental state not only conducive but favoring victory. Getting ready for your opponent means leading with one arsenal, keeping if it works but being able to switch if it doesn't.