The St Gallen goalkeeper had nothing to do for large portions of the game, and will be very pleased with a Europa League clean sheet.
Was in the wars, after taking an accidental elbow to the face, but the towering defender made the odd important header to keep Swansea at bay.
Made it difficult for Swansea to find the feet of Bony in the first half, and worked hard to ensure that the Premier League side found it hard to play through their lines.
Got forward well at times, delivering a few impresses balls from the right hand side. Struggled occasionally against Lamah and Routledge, but generally a solid performance.
The centre-half was strong in the air, and stood up to the physical test of Bony. Made a good first half interception to deny Routledge.
Spurned two great chances for the hosts, being denied excellently twice by Tremmel, but perhaps should have squared the second opportunity to Keita.
Was constantly willing to have the ball, keeping play moving and picking out a few nice passes, showing why moved through Bayern's youth ranks. His shooting was terrible, however.
Provided an excellent assist for Mathys to finish, and was unfortunate to strike the post with a brilliant second half free-kick effort.
Bundled home at the back post to give his side a memorable win against strong opposition, and did pop up in offensive areas for St Gallen.
Hit the side netting with a good effort in the first half, and didn't struggle to deal with Pozuelo on the right hand side.
Was withdrawn very early in the game, after pulling his hamstring whilst driving through the centre of midfield.
The Swansea goalkeeper had a fantastic game, making three top stops to prevent the scoreline from getting embarrassing. Conceded due to lax defending.
Made a couple of useful interceptions, but was guilty of wasting possession on several occasions.
The right-back got forward well in the first-half, but failed to produce any good deliveries, before being pegged back in the second 45 minutes.
Made some good back post defensive headers, and got forward whenever possible. Fortunate to see a Muthrich goal ruled out for St Gallen, after the Welshman chose not to challenge for a dangerous cross.
Gave away possession uncharacteristically on several occasions, and was withdrawn midway through the second half, after seemingly turning his ankle.
J. de Guzmán
A quiet game from the Netherlands international, whose only standout impact was a lovely succession of drag-backs which Michael Laudrup would have been satisfied with.
Had a couple of half chances to convert, and was always willing to beat his man. A lively performance, just lacking a finishing touch.
Extremely quiet on the right hand side in the first 45 minutes, but enjoyed himself more when given a freer role. Showed a few touches of class in the late stages, in particular a lovely scooped ball to Pablo Hernandez.
Always keen to have possession and look for positive passes, but the Englishman failed to play the incisive balls that allow Bony to test the hosts' defence.
Anonymous in the first half, but battled strongly in the second. Threw his weight around and had the beating of Besle and Russo for pace and strength, he just didn't get brilliant service.
The Belgian winger spurned two key opportunities in the opening half an hour, putting the ball narrowly wide of the post on both occasions.
Thrown on to compensate for Chico's injury, and wasn't asked a great deal of questions.
Looked bright after coming on, carving an opportunity for himself with a beautifully touch onto his stronger right foot.
Solid performance from the defensive midfielder, breaking up play and adding some grit to a lacklustre Swansea middle third.