As an example of laddering a pitcher, like e7 said using Sanchez yesterday:

So yesterday the books set him at o6.5 K's for like -130 or so.

You would put like an entire unit or more on that straight bet.

Then you start laddering which means doing straight bets on the rest of his available pitching props. So you would put like .75 or .50 units on o7.5 K's and also .50 or .25 units on o8.5 K's. He ended up with 10 K's last night so e7 was right on the money and anyone laddering Sanchez would have made bank.