[AtomicDumpling]

I agree that Escobar is by far the best of the bunch.

I would rank them:
Escobar
Penny
Igawa
Glavine

Early in the season I like to have upside be the tie-breaker when making decisions.

Like tripleaaaron said, I would use Penny when at home or in Washington or San Diego, but rarely on the road. With the rest of these guys I would only use them against teams in the bottom half of the league in scoring. This works best if you are in a league with daily lineup changes.

The National League pitchers are preferred because they don't have to face the high-scoring teams like the Yankees and Red Sox, nor do they face the DH.

Igawa will gets lots of wins but probably won't help you in other stats much.

You have some nice closers on the waiver wire. I would pick them up and use your stud closers to trade for better hitters.