Historical clue formulations

• – — 2020-07-30
• Odds' end? — 2009-10-30
• Ten ___ (long odds) — 1998-12-15
• Ending with two-, three-, four-, etc. — 1998-11-14
• Ending for most odds — 1998-11-08
• Oddsmaker's last words? — 1998-02-28
• Ten-_____ odds — 1994-04-25