Historical clue formulations

• Athletic type — 2024-07-24
• Varsity letter earner, say — 2020-07-27
• Athletic type ... or athletic wear — 2018-09-06
• B.M.O.C., typically — 2013-02-22
• Musclehead — 2009-02-08
• Varsity letter earner — 2005-11-09
• Enthusiast, informally — 2005-10-28
• Letter getter — 2003-12-20
• Athlete — 2001-08-28
• Bookworm's counterpart — 2000-02-08
• Athletic sort — 1994-04-23