Well, that's crappy news. Really want to blow the doors off the Lakers on national tv.
More like the Celtics are gonna get blown out without Horford stopping Brook Lopez. 
Naw, we should still win. Lopez is actually a bad match for Al anyways.
I'm more concerned about how long-term this might be given how long it took him last year to recover. Granted, if the symptoms just started this morning rather than when it happened on Monday night, hopefully that means it's a minor concussion and he'll be back soon.