Danny Murphy believes Arsenal's title rivals should be particularly concerned that Mikel Arteta's side have already built a substantial lead without playing their best football.
Arsenal edged past Hull City 1-0 on Saturday thanks to a goal from Martin Odegaard.
Meanwhile, Manchester City lost 3-1 to Nottingham Forest, suffering their third successive Premier League defeat.
As a result, Arsenal extended their lead at the top of the table to six points.
Murphy believes that is the biggest cause for concern for their rivals:
I think what should worry everyone else most is that they already have so many wins and so many points, even though, by and large, they haven't really played particularly well yet.
Perhaps the Chelsea game was an exception – they looked magnificent there.
In many other games, they've just worn opponents down and got the result.
Arsenal have 27 points after ten matches.
Murphy believes that start already points to serious title prospects:
Twenty-seven points after ten games – teams with those numbers usually win the league.
The former Liverpool and Tottenham midfielder is convinced Arteta's side can improve on their current level:
This team can still get better.
There should be no doubt about that at all.
Arsenal now face a difficult run after the international break.
They first travel to Newcastle, then host Borussia Dortmund in the Champions League before facing Manchester City at home.
