On paper, this fixture barely qualifies as a genuine contest — Barcelona away at a newly-promoted Elche side, with a squad gap that should be decisive over ninety minutes despite the away trip.
The real risk for Barça isn't Elche's quality, it's their own focus. Heavy favourites in low-stakes-feeling early fixtures have a well-documented tendency to take their foot off the gas, and a side with genuinely nothing to lose can occasionally make that expensive.
Expect Barcelona to control the game throughout, but don't be surprised if the scoreline takes longer to reflect the gap in quality than the pre-match odds would suggest.
On paper this is one-sided. The only real question is whether Barça's focus wavers against a side with nothing to lose.