This one's got me stumped!

[OHdad]

Apparently, this one was floating around the press box at a Reds-Pirates game this week:

Who is the first pitcher to beat all 30 current teams?

Sorry if this has been asked and answered, I didn't search. Have fun if it's new...

OHdad

[Macker]

It's Al Leiter

[Seattle1]

I wonder if it's Randy Johnson.

[Utter Chaos]

Johnson has never beaten Arizona

In addition to Leiter, I believe Kevin Brown and Terry Mulholland are the only other two that have done it.

[Seattle1]

What about Jamie Moyer?

[Utter Chaos]

What about Jamie Moyer?

He is 0-4 against Colorado. Has beaten everybody else at least once though.

Scroll to the bottom of this page: http://www.retrosheet.org/boxesetc/M/Lmoyej0010.htm

Edit to add guys that are close:
Pedro is 0-1 vs Boston and has beaten everybody else.
Hideo Nomo is 0-1 vs LAD and has beaten everybody else.
Paul Byrd is 0-4 vs LAD and has beaten everybody else.

Whoops, add Curt Schilling to the list, he has beaten all 30 as well.

[Seattle1]

He is 0-4 against Colorado. Has beaten everybody else at least once though.

Well I hope he gets another chance to nip the Rockies in the bud this season! That would be a good feather in his cap.