Rosariense had two straight wins in the new 2017–18 season with 6 points and 7 goals scored before a loss to Os Foguetões was made. They were first in the first two rounds. In just a few seasons, they are in the top two positions and are now much better than long time great Paulense, also, the island's top five clubs overall. A goal draw with Beira Mar was made at the 6th round followed by an 0–3 win over Paulense keeping that mighty club inside the relegation zone and at round 6, remains first with 16 points. Rosariense made a scoreless draw with Os Foguetões, their first position was taken by Santo Crucifixo. Rosariense was third at the ninth round. The season's final challenge was with Sinagoga, it ended in a three-goal draw and also Rosariense failed to win another championship title, they finished second behind Os Foguetões.