Bernard was the winger who didn't work all day. He should have been off at HT.
He did work hard Dave.
It just wasn't working for him - i.e. clicking. But he saw plenty of the ball. Walcott was crap in the first half but came good in the second.
The change was right though
@Khalekan - Walcott did indeed come into it, but Lookman at that time was the right player to bring on. He prefers to run with the ball - Walcott is all about movement off the ball, which is why, tbf, he probably had an ineffective game (there was no space in behind to run into).