Former Portugal great Eusebio is back in the hospital for the third time in two months.
Lisbon's Hospital da Luz says the onetime Benfica star spent the night due to high blood pressure.
Doctors say they decided to keep Eusebio overnight after he attended a routine examination Monday. They say he is expected to be discharged within 48 hours.
Eusebio spent Christmas in the hospital with a double pneumonia. He was readmitted several days later with severe neck pain.
Eusebio da Silva Ferreira, who turned 70 last month, became a Portuguese superstar from standout performances in the 1960s and was named one of FIFA's 10 best soccer players of all time in 1998.