Sunderland boss David Moyes admits they "never showed up" after defeat at Swansea City.
After a positive performance against Leicester City last weekend, there was a hope that Sunderland could continue this impressive form.
But that proved not to be the case, with Moyes frustrated the run could not continue.
"We never really got up and running," he said.
"We threatened to play well at times in the first half and had three or four opportunities to maybe make something more out of it, but we never really got to grips with it all day.
"We came in with lots of confidence coming on the back of some good form and we had a lot of self-belief.
"But we just didn't really turn up."