Championship winners Burnley were left ruing their inactivity in the transfer market as their return to the Premier League ended in a 1-0 defeat by Hull at Turf Moor.
New signing and World Cup winner Fernando Llorente made his debut for the Swans, who will have to cope with the sale of captain Ashley Williams and leading scorer Andre Ayew this season, but wasted several chances to open the scoring in the first-half.
Clarets defender Michael Keane was unfortunate not to earn a penalty after the interval and Swansea defender Federico Fernandez should have broken the deadlock before missing from only three yards out.