Despite opening the Premier League season with three wins, nine points, 10 goals scored and none conceded, Jose Mourinho has preached caution for his Manchester United team's title hopes and history would appear to back the manager’s views.
Three times before in the PL, and five in total, Man Utd have started the campaign with three successive clean sheets, but they did not win the title on any of those occasions.
But the Red Devils were not top of the table after any of those solid starts, giving Mourinho's men hope they can claim the title this time round.
During the Premier League era,Man Utd went the first five matches of 1997/98 without conceding, winning four and drawing one, but were edged to the title by a late surge from Arsenal.
But such a start was not enough to finish ahead of Mourinho’s dominant defending champions Chelsea.