Russell Martin admits elements of Swansea City's performance against Stoke City were "unacceptable" as they were beaten 3-0 by the Potters.
The Swans were lacklustre throughout the contest at the bet365 Stadium and conceded three second-half goals as Ryan Bennett was sent off.
And head coach Martin said the poor condition of several of his players proved costly as the Swans were beaten for the third time in four matches.
