I think you should not be sure about Chelsea winning the game against Fulham because they are not in the form and their team obviously is under pressure.
It’s true that their performances is getting worse with time. Chelsea is currently going through alot so we can’t be certain of matches they can win anymore so let’s not see them as the big team they use to be, all are in the past now. They have good quality players and enough squad depth to even challenge for the league but until they can figure out where there problem lies and find a solution to it fast they will still struggle throughout this season as well. Fulham maybes the under dog but they are not a team you can write off easily even if chelsea are not struggling they will give them a good fight.
…even some small clubs Chelsea has a big chances of wining but they cannot so even wining Brighton this week doesn't determine there chances of wining Fulham on there next match on less improve there performance but although Fulham also is not much in a good form considering there other matches so the two clubs are just on the same form which will make there match against Chelsea very tough.
I was so disappointed in Chelsea when they dropped points to some of the easiest opponents in the league they could have picked maximum points from. Losing to Nottingham and a draw with Bournemouth was so frustrating for me as a Chelsea fan, i just knew from that moment that we will have a terrible season. If we can’t win against these teams what will happen when we face stronger opponents? It’s going to be a long season for us and at times i just wish they should just start a new season already.