Much, much better in the second half.
Negatives first:
Bacuna did look very nervous in the first half. However, some of the stick he was getting on here was atrocious. Thankfully it didn't sound like the fans at VP were quite so quick to get on his back. Couple of good touches and very energetic though, and he improved in the second half (as did almost the entire team).
Brad looked typically solid in goal.
Weimann was fairly poor - I've been saying for a while that I really like him but there are areas of his game he really needs to work on, as shown today when he was constantly closed down. However, I'm sure he has the determination to improve.
I'm still not totally convinced by Vlaar, but don't think he's quite as bad as others are suggesting. Conceding one goal against Liverpool (from what I think was their only shot on target) certainly doesn't suggest that we were defensively poor.
The first half performance overall was sloppy and we couldn't get a foot on the ball for the first thirty minutes.
Benteke was kept fairly quiet, but still showed that he's the kind of quality forward who can pull something out of nothing. Unfortunately, he couldn't stick one of his very few chances in the back of the net.
Positives:
Delph is very dynamic and getting better and better. That said, although his aggression is an asset, he needs to stop putting his foot in needlessly and getting bookings, particularly early ones.
KEA looks much, much better than last season. Petrov-esque. We might have done better if he had started.
I think Okore looks like the real deal. Super composed and has bags of pace at the back, enabling the full backs (particularly on the right) to really push forward. He's also very composed with the ball at his feet and will help us get up the pitch by confidently striding out of defence, although he was rescued by Brad at the end when he was a little too casual.
Helenius didn't look too bad from the few touches he had.
Luna is tremendously hard working and clearly becoming a real fan favourite, and deservedly so.