But Stewart is exactly as bad as I think. Do you understand what i mean when i say he can not judge fly balls. Did you see him hurt himself on a foul fly that every outfielder who has ever played the game has the spatial knowledge to realize the ball will be landing 50 feet out of play?
And it's just ridiculous to think that Mountcastle should be judged an abject failure after 40 games in the outfield. If he can play mediocre defense in LF, he could be a frequent all-star with his bat.
If you want to position these two to prevent more runs, put Stewart at 1B.