I've seen this somewhat (2-3 times) but I believe they all happened during spring training, which probably made a big difference (the field, that is).
Pared, I've been working with the sliders, and they are excellent.
For those of you that didn't play '04, you are spoiled because fouling pitches off looks so nice this time around.
I didn't really think I would get to say this, but last game I had Vlad at bat against Johnson, and he fouled off 10 pitches....10...before I swung at a bad breaking ball. That is enough right there to make your sliders worth-while!