Although he was relatively untroubled, Fabiano proved a reliable pair of hands in Helton's absence and looked particularly commanding from set-piece situations.
A flawless display from the young Mexican who used his pace and good positioning skills to frustrate the Sevilla attack. Merged a solid partnership alongside Mangala.
An adventurous performance from the left-back who pinned Reyes into his own half with his determination to get forward. He was rarely exposed down the wing and produced a number of teasing crosses.
A confident performance from the Porto right-back who limited Reyes' attacking impact and offered a good attacking outlet on the overlap.
The France international showed why he is one of Europe's most coveted centre-backs with a commanding defensive performance. He opened the scoring with a thumping header and kept Bacca quiet with his pace and good reading of the game.
The Brazilian midfielder looked composed on the ball but did not offer as much of an attacking threat as Luis Castro would have liked.
Quaresma was a constant thorn to the Sevilla defence with his constant switching of the flanks. He produced an exquisite outside-of-the-foot cross for Mangala's goal and caused the full-backs problems with his footwork.
An energetic midfield performance from the Belgian who was tidy in possession and struck the post with a fierce long-range effort.
Marred a solid midfield performance with a careless red card in the closing stages. He broke up the Sevilla attack brilliantly and pulled the strings in midfield with his accurate range of passing.
A tireless performance from the Portuguese winger who stretched the Sevilla defence with his tireless running and good dribbling skills. However, he often failed to make the most of his opportunities in the final third.
An off-day for the Colombia international who failed to get the better of the Sevilla centre-backs. He used his strength to good effect but struggled to regularly test Beto. A yellow card ruled him out of the second leg.
The 31-year-old impressed against his former club, superbly tipping a Defour strike onto the post before later denying Varela.
Restricted the impact of Varela in the final third and his determination to press Porto high up the pitch helped to relieve the pressure on Beto's goal.
The Argentine went close to opening the scoring with a glancing header and held a good defensive line with Navarro to keep Martinez at bay.
The veteran Sevilla defender marshalled Martinez to good effect and proved insurmountable in the air.
The on-loan Reading man made a number of crucial interceptions to break up the Porto attack and he often acted as a third centre-back, adding good protection in front of the Sevilla goal.
The highly-rated Spain international was always willing to support the attack though he struggled to deal with the footwork of Quaresma and the threat of Danilo on the overlap. A yellow card ruled him out of the second leg.
The on-loan Chelsea winger was largely restricted to defensive duties in the first half and was easily contained by Danilo down the wing. He was unsurprisingly withdrawn on the hour mark.
The Croatian has been arguably Sevilla's best performer this season though he failed to capture his impressive form of recent weeks. He always made himself available for the pass though fouled to create chances for his teammates.
He struggled to deal with the quick pressing game of the Porto midfield and afforded the likes of Defour and Quintero too much space on the edge of the box.
José Antonio Reyes
The former Arsenal forward provided good defensive support to Coke but he failed to make the most of attacking situations.
The Colombian striker battled bravely up front though lacked the service to make an impact. However, his persistence nearly paid off late on when he tested Fabiano with a fierce drive.
The Portuguese midfielder made a dynamic impact from the bench as his energy helped Sevilla to get a foothold in the midfield battle.
The French striker gave Sevilla more attacking options and while he did cause the Porto defence problems late on, he spurned a glorious chance to snatch an away goal.