Squad sheets: Swansea City v Leyton Orient

Leyton Orient are struggling in the bottom half of League One but Russell Slade's side travel to Wales on the back of an impressive run of one defeat in 14 games. Any sign of complacency and Swansea could well go the same way as Norwich, who lost 1-0 to Orient at Carrow Road in the third round. Swansea's Leon Britton is cup-tied having appeared in the competition for Sheffield United while Leyton Orient are set to include on-loan Spurs midfielder Tommy Carroll in their squad. Spencer Vignes Venue Liberty Stadium, Saturday 12.50pm Ref S Attwell Odds Swansea 1-2 Leyton Orient 13-2 Draw 17-5 Head to head Swansea 28 Leyton Orient 29 Draws 19 Swansea Subs from Orlandi, Ma-Kalamby, Dobbie, Beattie, Van der Gun, Serrán, Agustien Doubtful None Cup-tied Britton Leyton Orient Subs from Butcher, Kane, M'Poku, Téhoué, Jarvis, Argent, Odubajo, Carroll, Omozusi Doubtful Dawson, Omozusi Match pointers Orient have failed to score in one of their 19 FA Cup matches since November 2005. Swansea have scored nine goals in their last two games against Orient.