Historical clue formulations

• Gridiron success … or, when read as two words, the conclusion to the sequence formed by the starts of 16-, 24-, 34- and 48-Across — 2026-01-05
• Land, as a plane — 2016-08-01
• Football scoring play — 2016-04-20
• "His posterior goes all the way back into the easy chair - ___!" — 2010-02-07
• Gridiron dream — 2000-08-03
• Alighting — 2000-06-01
• Score for Barry Sanders — 1993-11-23