Well Pedro always seems to take a few games off with injury, and Zambrano (provided it's Carlos) has pitched 214 and 209 innings the last two years.
I wouldn't bee too worried about Oswalt's workload.
Yes doctor, I am sick.
Sick of those who are spineless.
Sick of those who feel self-entitled.
Sick of those who are hypocrites.
Yes doctor, an army is forming.
Yes doctor, there will be a war.
Yes doctor, there will be blood.....