Yeah he had a shocker in the first half but as people have said, he barely gets a rest.
It's a very demanding position to play on the pitch and must be a tiring position to play when there is really nobody else in the team that the manager trusts in that position.
basically he is playing every minute that matters unless we are 4-0 up, or playing some cup game against a lower league side, or maybe a game in which qualification is already done, which is a game or two per season. Other than that, he's playing.
Getting stones back to play alongside him and help out should make it easier.