Baseball Stars Question

[Nature Boy]

I'm playing this for the first time. I'm creating a custom team (using Blue Jays player names naturally), and I've hit something I can't figure out.

For pitchers I see the following 'position' between their name and their 'PIT' designation: LO, RS, RO.

I have no idea what they mean.

Well, I'm guessing that the first character designates them as a Lefty or a Righty. But the second character only makes half sense: S might mean Starter, but in my books, O doesn't mean reliever.

Are there any experts here?

[Lady Jaye]

Pitching type (s=sideways, o=over the shoulder)?

Never thought about that before, but that makes sense, since both styles are used in the game (plus underhand softball throw for the girls in the game).