The issue for me was not Walker which I thought was dealt with fairly but the Brighton tactic of backing in to our defenders under long balls. I couldn't tell if they were fouls or not at the game but I thought Brighton had a deliberate tactic of trying to win set-pieces in our half and they resorted to every tactic to get them. Not easy to spot for the ref but I think after a while he should have been on the look out for it.