Historical clue formulations

• Major accomplishment in baseball or horse racing — 2022-07-04
• It comprises the 10-Down, 34-Across and a third part found elsewhere in the grid — 2009-05-02
• Feat for Secretariat — 2008-05-26
• Racing feat — 2007-07-10
• What was won by the answer to each capitalized clue — 2006-05-10
• Rare event in horseracing — 2005-05-02