Arsenal boss Mikel Arteta praised Pablo Mari after victory over West Ham.
Slotting in alongside David Luiz in central defence, the Spaniard played his part in a crucial shut out, and Mikel Arteta was pleased with the way he is adapting to the rigours of the Premier League.
Arteta said, "He is doing well, he's adapted really well - it is not an easy league and a central defender, in my opinion, to play in the Premier League is one of the toughest positions to play for any foreign player.
"But he is very willing, he is learning and he has a good experience and understanding with his team-mates."