How has sobering opening-day Sunderland defeat impacted the mood of the coach, squad and hierarchy - and what can they do about it?

Phil answered: Not sure who West Ham have in mind when it comes to their midfield, but it lacked legs and energy against Sunderland, pre-requisites at all times, and especially when you go to a newly-promoted team on the first day of the season. West Ham were overpowered and overrun on a very chastening day for manager Graham Potter.