Arsenal, who are in second place in the Premier League, lost 2-1 to Bournemouth after failing to keep their lead.
Declan Rice scored in the 34th minute to give Arsenal an early lead at home.
However, Bournemouth made a comeback in the second half with two goals.
Dine Hussein scored in the 67th minute to make it 1-1, and Evanilson scored the winning goal in the 75th minute.
With this win, Bournemouth moved up to 8th place with 53 points from 35 matches. Arsenal remain in second place with 67 points from the same number of games.