It was reported by ESPN and NFL Network before Sunday's game that WR Jeremy Maclin had passed the concussion protocol and would be playing on Sunday.
And then he didn't play (which made fantasy football folks angry).
So what happened? Chiefs trainer Rick Burkholder met with the media after the game to explain what happened.
"We have a concussion protocol, we followed that to the tee," Burkholder said. "He went through the program during the week. On Friday, at that point he had passed everything he had needed to pass. Coach told you that he was, he had cleared a lot Friday, but we also needed to check with him Saturday morning.
"On Saturday morning, we checked with him and he was fairly good and we continued to monitor the situation between our docs, myself and Coach Reid.
"Then (Sunday) morning, we took him through some testing again, which he did fine with, and it's all part of the program. It's not just pass the independent, pass the impact test. There's a lot of layers to this thing, and we felt as a group that it was best to hold him.
"That's what we do as a medical staff in the National Football League. We're charged with protecting these players and along with Coach Reid, and Jeremy, and our docs, we made a decision to hold him. He'll be evaluated again tomorrow morning to see what his status will be for London. I'm sure Coach can take care of that (Monday) for you."
So the Chiefs will find out more today if Maclin will be ready for the London trip this week. Considering he did pass the protocol and the decision seemed to be close, it seems like a good bet that Maclin will travel for the game.