By Scott Wright Staff Writer swright@oklahoman.comNORMAN — Defensive coordinator vs. defensive coordinator isn't a matchup that typically generates a lot of pregame buzz, no matter how big the game. Truthfully, it's not a matchup at all, since only one coordinator at a time has his defense on the field. Yet on Friday night, the meeting of Mustang and Norman North at Harve Collins Field produces a unique level of intrigue between the two defensive coordinators as the paths of Mustang's Adam Gaylor and Norman North's Ty Gower cross once again. The first meeting came in 2005.