Failed to command his area, not least when he remained rooted to the spot from a Gourcuff free kick which saw Tolisso head onto the post.
The left-back was a liability defensively, failing to offer enough protection to his centre-halves and also finding himself too far up the field on various occasions. Was particularly culpable for Gomis' opener.
Showed an inclination to get forward and set up Polar for a first-half effort which the midfielder should have put away. Never truly at home at the heart of the back four, however, with Gomis and Briand stretching him regularly.
Failed to quell the runs of Gourcuff into wide positions and was limited in his offensive work as a result. Tolisso also helped to force him back.
Had a bad day at the office. Squandered a gilt-edged chance to put his side ahead and was punished when Gomis stepped inside his flimsy challenge and fired home. Never fully recovered from the double setback.
The midfielder was, like his side, slightly sluggish to begin with, but worked his way into the game and gave them something to work with by notching a well-worked leveller by showing presence of mind in front of goal.
The winger caused Miguel Lopes all sorts of problems at right-back and his direct running opened up gaps for others to exploit. Sadly, they could not make the most of his often unselfish play until he set up Tecl for Plzen's second goal.
The midfielder was unable to replicate his goalscoring antics of the first leg but was one of his side's better performers, firing off shots at goal and passing the ball neatly.
The striker endured mixed fortunes throughout. He could not offer enough hold-up play in the first period but showed good movement and finishing prowess to offer his side more of a focal point in attack. Took their second goal with aplomb but missed what could have been a crucial penalty.
Missed a wonderful early chance to hand his side what could have been a crucial advantage. He did not allow it to affect his performance, however, and won a second-half penalty for his side.
Superb goalkeeping performance. Had no chance with either goal but pulled off some stunning saves in addition to his reliable handling of the ball from set-pieces.
The Serb was impressive in the opening stages, covering for his full-backs admirably when they pushed forward but suffered from an overall dip in defensive performance after the interval.
Clumsy and cumbersome at times, the defender seemed a definite weak link in the Lyon back four, particularly when Plzen piled the pressure on in the second half.
The Portuguese struggled to contain a rampant Petrzela and had Limbersky to deal with too for the entirety of the contest, but stuck to his guns and was effective going forward.
Failed to offer enough security at the back and was caught out for both goals when he found himself out of position. Worked hard getting forward but his side needed more from a defensive perspective.
The Frenchman's delivery from set-pieces was particularly eye-catching and his passing was typically silky, but he disappeared in the face of a Plzen onslaught in the second half.
The youngster was terrific early on, spraying passes around the field and dictating the tempo of the game in a manner that belied his tender years. Faded, like the majority of his side, after the break but impressed generally.
The game passed him by a lot of the time and he was unable to stamp his usual authority. Should have been much more aware of Kolar's run for the equaliser.
A tireless display from another talented youngster, but he wasn't always able to have a telling influence on the match.
Missed two presentable chances and had no tangible impact on the game, with Plzen defenders coping admirably with the Frenchman's efforts.
Took his goal brilliantly and led the line cleverly for his side, showing intelligent touches, unselfish runs out wide and shots at goal.