Arsenal fans have been left reeling after Ghana midfielder Thomas Partey walked off the pitch injured in the first half of Sunday's 2-1 pre-season defeat to Chelsea.
With a fine start to the game at Emirates Stadium, the 28-year-old's day ended in disappointment as he suffered what looked like an ankle injury following a challenge from Chelsea winger Hakim Ziyech.
He was promptly replaced by Switzerland midfielder Granit Xhaka, amid fears of missing the opening Premier League fixture against Brentford in two weeks' time.
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It is another disappointing episode for the Ghanaian, whose first season at Arsenal, following a big move from Atletico Madrid last summer, was marred by injuries.
Below are some of the best reactions to Sunday's incident: