Arsenal boss Arsene Wenger says Theo Walcott is always under pressure to get hit by a mis-timed challenge because of his pace. Arsene Wenger: "At his pace, when you get stopped, you are always vulnerable. "Tonight, he got one or two tackles and he got away with it because he did not have his full weight on his standing leg. "But against Switzerland, for example, what can you do? He is not vulnerable because of his injuries, it was a tackle. "When you play against a player who is so quick, sometimes you can mistime tackles. "It's not necessarily always that you want to hit him, but he is so quick that you think, 'Now I can get the ball', and it has gone away."