Manchester City manager Guardiola, speaking to BT Sport: "It was really difficult. They have the physicality, they have the quality of players.
"After 10 or 15 minutes today we realised we were not going to paint anything beautiful. When you play a lot of games - in the league and then the Champions League - this is normal.
"We were lucky to get all three points. The mathematics matter at the end of the season."
West Ham boss Moyes, speaking to the BBC's Match of the Day: "I'm really disappointed we didn't get a point. It was a terrific performance. We came here and tried to match a top side - and for long periods we did.
"I can't promise to deliver European football to West Ham. I've hoped that we can try and be top 10. We can't get carried away because we're up against teams who are used to being at the top of the league.
"We're the newcomers, for sure, but we've put on a good show and I hope this performance gives us momentum and energy for the rest of the season."