Leyton Orient extended their winning run to eight League One matches with a 2-0 win at Brentford on Monday night.
The Os are the only one of the 92 English Football League clubs to have won all their games this season after David Mooney and Shaun Batt's goals at Griffin Park.
Mooney opened the scoring from the penalty spot in the 65th minute and Batt sealed three more points ten minutes later.
Russell Slade's side are now five points clear of second-placed Peterborough, with a goal difference of +18.
Reading hold the record for the longest winning streak at the start of a season, with their 13 successive victories at the beginning of the 1985-86 Third Division.