Barcelona striker Sergio Aguero has been taken to hospital after he suffered chest pain and complained about feeling dizzy during his side's 1-1 LaLiga draw with Alaves on Saturday.
"Sergio Aguero was struggling with chest pain for much of the first half and was replaced by Philippe Coutinho at halftime and then taken to hospital for cardiac analysis," Barcelona said in a statement.
During the first half, the Argentine appeared to signal to the bench that he wanted to be taken off.
Shortly before the interval, the 33-year-old was seen lying on the pitch while holding his chest.
Medical staff rushed to assist Aguero, who eventually got up and slowly walked off the pitch unaided.
"I was told he was feeling a bit dizzy. I have just learned that he was taken to hospital and I can't say much more until I know," Barcelona's caretaker coach Sergi Barjuan said.
Captains will be the only ones allowed to speak to the referee and discuss a decision during matches at the upcoming European Championship in a bid to facilitate clearer communication.
Substitute Jhon Duran scored two late goals as Aston Villa fought back to salvage a 3-3 home draw with Liverpool on Monday and take a significant step towards a place in the Champions League next season.
Arsenal's Leandro Trossard capitalised on dreadful defending to secure a 1-0 win against Manchester United that saw the Gunners climb back to the top of the Premier League, ensuring the title race will be decided on the final day.
UAE Team Emirates rider Tadej Pogacar has retained his overall lead after Dutchman Olav Kooij won stage nine of the Giro d'Italia on Sunday, pipping Jonathan Milan by half a wheel right at the finish line in a breathless sprint at the end of a 214-km ride from Avezzano to Naples.