Sean Casey was rushed to the hospital last night after his face came out on the losing side of a conflict with Humberto Cota's elbow. Casey was diagnosed with a grade 2 concussion and released. Here's a definition of a grade 2 concussion, according to NeurosurgeryToday.org:

A Grade 2 concussion involves loss of consciousness for less than five minutes or a period of post-traumatic amnesia that lasts more than 30 minutes but less than 24 hours.

The site also offers some advice for athletes sustaining such a condition:

Following a Grade 2 concussion, an athlete may return to competition in a week if he or she feels no symptoms either during rest or exertion. After a second Grade 2 concussion, return to play should be deferred for at least a month and termination of the season should be considered.

Casey certainly has at least one other concussion, the first one appearing in a Google search for “Sean Casey concussion” being from 2002 when a pitch to the head took him down for the count. The Reds medical staff will make their own determination, of course, but it's a very real possibility that Casey is done for 2005.

And if that happens, you know what that means: no hope of securing the Reds' record for double plays. Truly a shame.

Get well soon, Case.