Manchester City manager Mark Hughes has warned the Premier League's 'big four' they will continue to drop points.
Hughes's side kept up the pressure at the top of the Premier League after drawing at Wigan on Sunday and are five points off the top with a game in hand.
Chelsea and Liverpool lost on Saturday and Hughes feels they, along with Manchester United and Arsenal, will see their dominance challenged this season.
"This year has the potential to be as open as it has ever been," said Hughes.
"The top four teams will drop points. That has been evident at the beginning of the season and it will continue."
City spent over £100m on new players during the summer and have already beaten Arsenal this season, while Tottenham are already mounting a strong challenge for a top-four finish and a place in next season's Champions League.
With Aston Villa beating Chelsea on Saturday and Sunderland defeating Liverpool, Hughes feels the overall standard is higher this season.
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