<<...6-4-3 double play...>>
wots that fer all us nonUSns?


All well and good, but I don't think anyone's answered the question yet.

The position on the baseball field are numbered, for some contexts. Thus
pitcher = 1
catcher = 2
first base = 3
second base = 4
shortstop = 5
third base = 6
right field = 7
center field = 8
left field = 9
if I have my directions right.

A 6-4-3 double play would be the description of a play where with a runner on first base, the batter hits the ball to the third baseman, who throws to the second baseman (in time to get the runner out) who then throws to the first baseman in time to get the batter out too. Double play, six-to-four-to-three.

Metaphorically speaking, it's a quick, efficient, and painless resolution of a potentially dangerous situation, snuffing out a threat before any damage is done.

Hope this answer is in keeping with the level of your knowledge of baseball.