The Seleccao great fell ill while accompanying his country's national team at Euro 2012, but looks to have made a full recovery.
The 70-year-old traveled to Poland to watch the Seleccao's 1-0 quarterfinal victory over the Czech Republic, but was admitted to the hospital after a health scare.
"Eusebio enjoyed a good night. The medical team found him physically and mentally able today and discharged him," hospital spokesperson Stanislav Rusek told Abola.
"Eusebio was fine, just a bit tired, and right now his condition is stable," reassured doctor Jose Roquete at a press conference. "However, we will not let him watch Portugal's match."
The Benfica icon has been in and out of hospital three times since Dec. 2011, with a history of hypertension.
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