Possible Clues:

• The Tide
• Auburn rival, familiarly
• "Roll Tide" school, informally
• "Roll Tide" school
• Crimson Tide, informally
• The Crimson Tide, informally
• Tuscaloosa school, informally
• The Crimson Tide, to fans
• Home of the Crimson Tide, familiarly
• 'The Crimson Tide'