Master of ____________ is training the main character. Main character just can't get a move/idea/shot/maneuver down no matter what. Main still completes training/missions/adversary with ease until he gets to the final boss. Final boss starts winning and riiiiiiiiiiiiiiiiiiiiiiiiiiiight when things are about over for our hero, he gets a flashback to what his teacher was trying to tell him...
He pulls off the move we all forgot about, with perfection and wins. Someone asks him how the hell he managed to pull that off.. He says "I had a great teacher"
I've seen this in every sports movie (think Rocky, Any given sunday), action movie (karate kid), racing movie (GT, FF every damn movie), sci fi.... When it's time to do the impossible, they are definitely going to pull out the ONE thing that the character could never do