He said: "I got a bit battered during the game but I wanted to play on. Then I twisted my ankle and with a game against Heerenveen at The Hawthorns on Saturday I did not want to force things at the risk of missing the start of the season. The injury is not too severe though. Up until that point I thought I had put in a solid performance and my headers were a lot better because that is an area I have been working on in training for the last couple of weeks."