Historical clue formulations

• Propels, like a shuffleboard disk — 2025-06-06
• Pushes hard — 2015-05-20
• Some basketball fouls — 2014-12-09
• Starts of some brawls — 2008-08-20
• Heads (off) — 2004-01-10
• Is unruly in a crowd — 2002-09-01
• Starts of some melees — 2001-01-20
• Elbows — 1999-10-12