Robertson was pleased to have secured a home game this month but conceded they had drawn tough opponents in the Rangers so early in the campaign.
"You sort of expect to face teams like that in round four or five but that's just how the draw goes," he said.
The Blues, who are setting the pace in the league competition this season with just one loss, drew 1-all with Miramar Rangers in an away game.
"To achieve what we want to we'll have to beat the best in the country, I suppose, so that makes no difference," he said.
After the one-sided affair with Massey on Monday, the Rovers play second-placed Western Suburbs in the league this Saturday.
They will then host Wellington Olympic the following Sunday in another league clash before the cup match.
The Napier club has five Chatham Cup crowns under their belt.
Like last season, Robertson and his men have some unfinished business after setting the goal of securing a double - league and cup crowns.
While the league looks safe after a loss and two draws, the cup campaign will be a long and winding road to national supremacy.