Guernsey captain Blair Campbell has said he is relieved all the attention is on Jersey for the 2011 Siam Cup.
Jersey dominated in last year's encounter at Footes Lane, winning 36-0.
Campbell told BBC Guernsey: "They've got to be considered favourites: they're expected to win and win well.
"But I think being underdog puts us in a good position. We'll hopefully take them by surprise as we're confident we can put in a good performance."
Jersey are favourites for the Siam Cup after a season that has taken them to the brink of winning promotion into National League One.
Having finished second in National Two South, Jersey now face a promotion play-off at the end of the month.
Guernsey also enjoyed a successful season, albeit at a lower level, winning promotion to London One South.
Player-coach Jordan Reynolds said: "We've had a good four weeks off without any games, so we've been concentrating on the areas that we had to, but it's not easy just going through training for four weeks.
"Jersey still have another game to play after this one, but they have a big squad so whether or not they're going to rest players we don't know. It's going to be a tough match either way."
The Siam Cup is the second oldest rugby trophy in existence, behind only the Calcutta Cup, competed for by England and Scotland.