Russell Martin says Cameron Congreve and Olivier Ntcham were both withdrawn during the 2-1 loss to Middlesbrough due to Swansea City's lack of intensity in the final third.
The visitors started well but conceded twice in the first half as Riley McGree and Matt Crooks both netted.
Congreve was withdrawn shortly after the half hour mark at the Riverside Stadium while Ntcham was substituted at half-time as the Swans desperately looked for a route back into the contest. They pulled a goal back through Joel Piroe late on but couldn't find an equaliser after having Ben Cabango sent off three minutes from time.
