Osasuna are shown as the favourite side in the game against Sevilla. If it was in Sevilla's home then maybe things would have been the other way around. Anyway honestly I don't see any problem with this situation now. Because Sevilla are one of the most unreliable teams in the La Liga currently.
Osasuna is shown as my favorite team because Osasuna's position in the La Liga standings table is currently above Sevilla. Don't be easily trapped by the odds and the team that is the favorite to win. The difference in odds for these two teams is not much different. In my opinion, more specific analysis is needed when betting on matches like Osasuna-Sevilla.
Usually, a match like this can ruin the entire list of other bets.
From the list of meetings between the two, Osasuna and Sevilla are almost equal in terms of wins. Don't look at Sevilla's weak condition at the start of this season, they could easily be beaten by Osasuna, who knows, this match will be the starting point for Sevilla to rise in La Liga.