Ok, one can argue that this game wasn’t that bad, but it wasn’t great either. The next game was absolutely terrible though.
Losing in 26 moves with white in the Bd2-Bogo is pretty rare on this level. His white repertoire hasn’t been impressive so far.
Here is some insight on how they play against him. Ever since the game with Anand everybody knows that Keymer cannot play for kingside attacks. So they are picking openings with black where they get a queenside majority and it is up to him to prove something on the kingside. In order to stop this from becoming a regular theme he should switch to the Catalan. Learn a lesson from Meier.
On the bright side, if you can call it that with 0.5/4, let’s not forget that Keymer is a massive underdog. He is taking a lot of risk, but it’s the kind of risk that Kramnik took in his last tournament. Fire on the board is nice, but not if you only burn down your own position.
Play it safe!