This might seem stupid, but I've been watching baseball for quite some time and one thing I could never quite understand, nor do I still is...why are managers so content on the lefty vs lefty matchup? I mean how is a righty vs righty any different? Arm angles or some other godly forces? I dont see the difference, so thats why I can never understand why managers try to avoid or set up the 'dreaded' lefty/lefty matchup...