KAZ

Set to 2 different clues across 2 published puzzles, most often “Second baseman Matsui, to fans” — The New York Times, Sunday, 19 September 2010.

3 letters

Every clue on record, most used first

Second baseman Matsui, to fansonce
The New York Times — Sunday, 19 September 2010
1970's TV law dramaonce
The New York Times — Wednesday, 15 March 1995