Historical clue formulations

• N.F.C. West team, informally — 2026-09-26
• Some Bay Area athletes, familiarly — 2025-03-02
• 2020 Super Bowl-losing squad — 2021-04-24
• Five-time Super Bowl champs, for short — 2006-03-02
• Super Bowl XXIX winners, for short — 2003-09-13
• S.F. footballers, informally — 1998-11-16
• Frisco gridders — 1998-06-16
• Super Bowl XXIX winners, informally — 1997-05-25
• Frisco 11 — 1995-01-14