Two pitchers in the game at the same time

[BiZmaRK]

I've seen this done at least once. Why do we not see it more often?

http://www.baseball-reference.com/boxes/CIN/CIN198607220.shtml

[TG Coach]

You don't see it more often becaause 1) the manager is risking his job the pitchers don't cost the team the game with their outfield play and 2) teams have twelve pitchers on the roster.

[XV84]

Bobby Cox did this in a game this year.