I'm going to try to go about this like an adult, so bear with me.
I missed the first half and he was subbed in the middle of the second. So I didn't get to see much of his game yesterday.
Read about him at RAWK and the general opinion is that he doesn't look fit.
I re-watched the Watford game, well large bits of it and my honest opinion is that something seems to be off.
I don't think he's completely fit, not in a conditioning sense but more injury related. I just don't see the same type of running.
His reading of the game has never really impressed me but his agility, pace and hard work more often than not covered for it.
This time around he just looks a lot slower, like something is bothering him. Before he got subbed yesterday I noticed that he in several situations was late in terms of covering and running back to defend, which left us a bit exposed in midfield.
I've rarely seen Klopp sub Henderson mid game and Klopp did say something afterwards about him having a tough pre season. Rested or something wrong, your take?