Newly promoted sides Marítimo and Académico de Viseu entered the 2026-27 Primeira Liga with limited top-flight experience, making them immediate relegation risks alongside established lower-table clubs. Early results have reinforced concerns, with Casa Pia winless after six matches and conceding heavily, while Estoril Praia and Rio Ave sit near the foot with poor goal differences. Mid-table sides such as Alverca, Nacional, and Famalicão have also struggled for consistent results. The bottom two face direct relegation to Liga Portugal 2, with 16th place entering a playoff against the third-placed team from the second tier. Recent form, squad depth, and home/away splits will shape the battle through the autumn fixtures.