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Chelsea's Jesse Derry is taken off the field via a stretcher after a head injury during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
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Chelsea goalkeeper Robert Sanchez receives treatment for a head injury during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
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Nottingham Forest's Taiwo Awoniyi, left, celebrates scoring their side's third goal with teammate Morgan Gibbs-White during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
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Nottingham Forest goalkeeper Matz Sels, right, claims the ball from Chelsea's Cole Palmer after he missed penalty kick during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
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Chelsea's Joao Pedro, center, falls to the ground after pressure from Nottingham Forest's Ryan Yates during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
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Chelsea's Jesse Derry, left, attempts a shot towards goal during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
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Nottingham Forest's Morato, left, and Chelsea's Joao Pedro battle for the ball during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
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Nottingham Forest's Taiwo Awoniyi, right, scores their side's first goal of the game during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
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Nottingham Forest's Luca Netz, front, and Chelsea's Cole Palmer battle for the ball during the English Premier League soccer match between Chelsea and Nottingham Forest in London. | Photo: John Walton/PA via AP
