Seems like Spratt didn't want the fight in the first place. I didn't expect it to take much for the fight to be stopped.
I was surprised at the way Sera kept him down, though. There were a few times where Sera wasn't long enough in the legs and arms to put pressure on him from both sides, either from half guard or side control. Maybe it's just the way it looks on TV, since Sera is "the jj wizard", but if Spratt had've tried to roll Sera to one side he might've been able to get up, or at least get to the fence and try to wall climb.
Pretty lazy fight overall from Spratt, IMHO.