Stagnant

Dictionary.com defines stagnant as:

stag·nant   /ˈstægnənt/ –adjective
1.not flowing or running, as water, air, etc.
2.stale or foul from standing, as a pool of water.
3.characterized by lack of development, advancement, or progressive movement: a stagnant economy.
4.inactive, sluggish, or dull.

I'm assuming Brandon Webb was referring to definition number 3 when he said today that he felt stagnant after his bullpen session.

Hmmm...probably not a good thing for the Diamondbacks.