No one loves a small sample more than the Eyeball Scout, so let's make a bunch of sweeping conclusions based on 6 innings or less. Sean Nolin made his A's debut on Sunday afternoon and later in the game Ryan Dull made his 4th inning "1 IP appearance" out of the bullpen.
Sean Nolin
I'll be honest that I wasn't overly impressed with Nolin's debut (6 IP, 5 hits, 3 ER, 3 BB, 1 K), though one has to try to observe pitches in the context of nerves and adrenaline.