Russell Martin admits Swansea City's 3-0 defeat to Stoke City served up one of the harshest lessons of his coaching career to date.
The Swans were outclassed from start to finish at the bet365 Stadium on Tuesday night, with fatigue playing a significant part in the away side's lacklustre showing against the Potters.
And ahead of Sunday's Championship contest with Bristol City, the head coach held his hands up after stating he was wrong with team selection against Michael O'Neill's men.
