Mind taking that a bit further? Aside from the Northampton game, which games taken as one-off results, have been genuinely bad? Not performances,
results.
Arsenal at home, drawn - not a bad result, I'd argue they're the second strongest side in the league this year.
Man City away, lost - not an awful or unexpected result. The manner of defeat was shocking, but the loss itself not so much. Chelsea just lost to them as well.
West Brom home, won - a game we'd have expected to win, and did. We played badly, but won.
Birmingham away, drawn - a draw away to a team who has now not lost at home for a year. Seems OK to me.
Man Utd away, lost - again, not a terrible or unexpected result.
Sunderland home, drawn - probably the worst result of the lot, but ultimately it's a draw against a reasonable side. It's by no means a good result, but certainly not a reason to wave the white flag.
Aside from the Sunderland result, which I would argue is not awful, which results of the above would you expect to change? Yes, the league cup defeat was a shocker, but it's not as if Benitez had a wonderful time in the cups either for the most part- I seem to remember getting beaten by Palace, and nearly losing to Havant and Waterlooville.