Sean Casey returned to the Reds clubhouse Saturday, but said he does not remember the collision that caused his concussion. "I have no memory of it, nothing between reaching for the ball ... and then waking up and seeing [Reds catcher Jason] LaRue leaning over me, which wasn't a good sight," Casey told the paper, laughing. Medical personnel said he was unconscious for only about 20 seconds. "I told them [the medical personnel] I could get up, but I think it was because of my history with concussions [he's had two previous ones] that they told me not to get up," Casey told the paper. The concussion he suffered Friday was a "Grade II."