Historical clue formulations

• Some basketball venues … or players — 2023-09-15
• Hockey players who face off in a face-off — 2021-09-04
• Roughly half of all N.B.A. M.V.P.'s — 2013-05-04
• Court figures — 2009-04-10
• Midpoints — 2006-02-27
• Court figures — 1999-04-10
• Gretzky and Ewing — 1998-10-18