The Swans missed several opportunities to take a lead but still have hopes of an improbable progression to the last 16 of the Europa League.
Garry Monk - managing in Europe for the first time - witnessed the Swans put in a spirited performance in the first leg against the Serie A outfit at the Liberty Stadium on Thursday, but saw the likes of Wilfried Bony and captain Ashley Williams miss good chances to break the deadlock.
Rafael Benitez's men started at a fast pace, but came close to going behind as Bony almost rounded goalkeeper Rafael Cabral before Williams headed over when unmarked at the back post.
|VIEW FROM THE LIBERTY
|By Ben Cullimore
What a fantastic performance from Swansea. Coming into this game, many had written off their chances against a side that so often impress on the European stage, but Garry Monk's men made Benitez's boys look weak and lacking in creativity and ideas.
Williams and Flores excelled in the center of defense, while Routledge, Hernandez and Bony combined together to cause the Napoli back four a multitude of problems. Rafael and Reina were the heroes for the Italians this evening, and if they weren't constantly on hand to keep Bony & Co. at bay then Napoli could have left South Wales at least two or three goals down.
Next week's clash in Naples is going to be extremely difficult for Swansea, but the club will be full of confidence after tonight's impressive performance. And who knows, if the Swans play as well as they did tonight, they may well be able to continue their European adventure.
Napoli headed into the match as the favorite to progress and was looking for improvement after the break, but failed to put a stamp on the game. Williams again came close with a back-post header on 68 minutes.
Neither team was able to find a winner, however, leaving the tie nicely poised ahead of next week's return leg at the Stadio San Paolo.
The visitors had two opportunities to take the lead within the opening five minutes. Jose Callejon first dragged an effort wide from the right before a swift counterattack led to Marek Hamsik forcing a smart stop from Michel Vorm with a strong left-footed shot.
After surviving that scare, Swansea launched an attack of its own and a one-two between Nathan Dyer and Pablo Hernandez saw the former scoop an effort toward the far corner that Rafael did well to keep out.
Bony was proving to be a constant threat to the Napoli defense and the Ivorian sprung free in the 22nd minute to latch onto Hernandez's through ball, but, after failing to round Rafael, his shot struck the goalkeeper in the face and went out for a corner.
Swansea skipper Williams had arguably the best chance of the half five minutes before the break. Hernandez's cross was played deep to the back post, where the center back had a free header that he put over the bar.
Rafael picked up an ankle injury shortly before the break, meaning regular No. 1 Pepe Reina appeared in goal for Napoli in the second half.
By and large it was still Swansea that continued to control the tempo, although clear-cut chances were hard to come by after the interval.
Williams again almost found the breakthrough for Swansea with just more than 20 minutes remaining when his towering header from substitute Jonathan de Guzman's free kick forced Reina into action.
With 15 minutes remaining, Reina had to be on guard to keep the scores level when he parried Wayne Routledge's curling effort from the left-hand side of the box.
There was still time for one last chance for Swansea in the closing stages, but Chico Flores could only head De Guzman's free kick straight at Reina from close range.