The Berlin Defence suited my strategy for the match. I had a defensive strategy - Actually, I had in my pocket some other sharper stuff to fall back on - but first I wanted to try the defensive strategy with Black and it worked so well.
Once he had selected the path he was going down he really had to stick with it in a 16 game match. He had to try and hit in the one direction but unfortunately for him - though fortunately for me! - he hit in the wrong direction.