Crossword puzzle clue "one of three for an out"

"If three hens lay three eggs in three days ...," e.g.

Three short, three long, three short

Took three out of three, say

One of the three on "Three's Company"

Three-three, for one

One of only three golfers who briefly kept Tiger Woods out of the World #1 spot between 1/11/1998 and 10/30/2010

Today, I tried to put a self-effacing three-letter acronym inside each theme entry. Turns out it works in any order except the one I want. ___

One of three for an out