Conversation so far:
What year did Roger Clemens play for Boston Red Sox?
1986.
Did he win any awards while playing that year?
CANNOTANSWER.
Did the team have many wins when Clemens was part of the team?
Clemens returned to the mound for Game 6, which would have clinched the World Series for the Boston Red Sox.
Do it list some players that Clemens played with in the league?
CANNOTANSWER.
What was Clemens role on the team like what position did he play?
Clemens returned to the mound.

Question: What did play in the league?
Self-contained rewrite: What did Roger Clemens play in the league?