Arsenal boss Unai Emery bizarrely claimed that he took Dani Ceballos off against Watford because it was too hot.
Ceballos was replaced by Joe Willock on the hour mark, with many Arsenal supporters left baffled by the decision to withdraw the Real Madrid loanee.
Matteo Guendouzi was one of the Arsenal players who struggled, but Emery backed the 20-year-old to bounce back from his mistake.
Emery told Sky Sports: 'That is experience. We have a lot of young players who need to have that moment, for example Matteo.
'He is working a lot to improve and he's going to take experience from matches like that. He can grow up from the mistakes and really learn for the next matches.'