I know in the Memphis area that the top rivalries are CBHS vs. MUS (private school rivalry), Ridgeway vs. White Station (Memphis City Schools rivalry, though not as intense as 10-20 years ago), and Germantown vs. Houston (Shelby County Schools rivalry--started in 1989 when Houston High School, about 3 miles from Germantown High School, opened its doors.) Of all the rivalries in Memphis, Gtown/Houston is my favorite. Although Germantown owns Houston with a dominating 11-4 record, Houston has won in the series at very pivotal times...such as the 1998 quarterfinal match-up at Germantown when a section of the visitors' side collapsed or the horrid 2001 quarterfinal match-up at Houston when the Mustangs handed the Red Devils their worst defeat in over a decade. Past those slight melodramas, the Devils have enjoyed a near constant strangehold on the Mustangs (aka Ponies); Houston: It's our name, our game, our town, BOW DOWN!