one old cat
[ wuhn-uh kat ]
/ ˈwʌn ə ˌkæt /
noun Games.
a form of baseball in which there is a home plate and one other base, and in which a player remains at bat and scores runs by hitting the ball and running to the base and back without being put out.
Also
one o' cat,
one-a-cat.
Origin of one old cat
An Americanism dating back to 1840–50