Conversation so far:
Who did Cito Gaston play for?
Blue Jays.
What did they win?
World Series.
What happen in the series?
In the six games the Blue Jays played in those places during World Series play, the Jays went 4-2, including the title clincher in Game 6.
What else did Cito do?
Gaston had worked with players at an individual level as a hitting instructor and transferred this to the job of manager.

Question: What job he did?
Self-contained rewrite: What job did Cito Gaston do?