Arsenal have had several tough wins this season, this one against Crystal Palace falls into that category.
The Gunners seem to be in a championship rhythm, having only conceded three goals so far in the Premier League and the table is almost perfect for Mikel Arteta's team.
After the triumph over Crystal Palace (1:0), Arsenal is six points ahead of Manchester City and seven ahead of current champions Liverpool.
City lost to Aston Villa, who tied their fourth win - winning 1:0.
The winner at "Vila Park" was decided by Mati Keš, who scored in the 19th minute.
After this round, Bournemouth is second in the standings after a triumph over Nottingham Forest (2:0), and third place is shared between Tottenham and Sunderland, who shocked Chelsea on Saturday.
Spurs beat Everton 3-0 in Liverpool, with two goals from Mickey van de Ven. Pape Matar Sar also scored.
Bonus video: