The Seagulls were two goals to the good by half-time, courtesy of a double strike by Pascal Gross, but Cristiano Ronaldo's introduction during the second period enabled Eriksen to depart a false-nine role, and revert to a deeper playmaking position.
It meant the Dane was able to stick to the areas where we are more accustomed to seeing him, and he helped spark attacks with his probing passing.
Anthony Martial's injury and the fact Ronaldo was not fit enough to start after only one half of football in pre-season led to Eriksen pushing into attack but the Reds' only real chance of note in the opening 45 minutes was a Bruno Fernandes shot that flew over the top from a promising position.