Reuben Hazell scored the only goal of the game to give Oldham a 1-0 victory over former club Tranmere which helped the Latics climb to the top of the Coca-Cola League One table.
The 29-year-old defender, who played for Rovers from 1999 to 2002, headed home a Neal Eardley cross in the 35th minute to give Oldham a hard-fought win at Prenton Park.
John Sheridan's side leapfrogged Leicester into top spot with the Foxes' fixture against Colchester postponed because of international commitments.
Carlisle came back from Dougie Freedman's 22nd-minute strike to claim a 2-1 victory over Southend to move up to second place.
Danny Graham converted from the penalty spot in the 63rd minute at Brunton Park to equalise before Cleveland Taylor's winner 11 minutes from time.
A Gary Hooper hat-trick (45, 55, 68) ensured Scunthorpe kept pace with the early leaders as they eased to a 4-1 away win over Brighton.
Martyn Woolford had earlier opened the scoring for the visitors in the fourth minute while Jake Robinson (75) got a consolation for the Seagulls.
Promotion hopefuls Walsall suffered a setback as goals from Paul Terry (73) and an 80th-minute penalty from Adam Boyd gave Leyton Orient a 2-0 win at the Bescot Stadium.
Leeds thumped Crewe 5-2 thanks to strikes from Fabian Delph (26), Alan Sheehan (36), Jonathan Douglas (49), Jermaine Beckford (67) and Andy Robinson (82).
Calvin Zola and Eugen Bopp both netted consolation goals for the Railwaymen in injury time at Elland Road while United's Lubomir Michalik was sent off for a second bookable offence in the dying stages.
A brace from Peter Leven (21, 78) either side of Sam Baldock's 53rd-minute strike gave MK Dons a comprehensive 3-0 win over Yeovil.
Struggling Huddersfield got their first victory of the season after they came back from Lloyd Owusu's opening goal three minutes before the break to claim a 2-1 win over Cheltenham.
Nathan Clarke equalised for the visitors at Whaddon Road in the 57th minute and Ian Craney's strike 10 minutes later proved to be the decisive goal.
Lewis Grabban's third-minute striker and a goal from Gary Alexander (41) gave Millwall a routine 2-0 home win over Hartlepool.
In the day's early kick-off Craig Mackail-Smith grabbed hat-trick as Peterborough ran out 5-4 winners over Bristol Rovers in a nine-goal thriller at London Road.
The former Dagenham man opened the scoring in the 16th minute before strike partner Aaron Mclean doubled the lead seven minutes later.
Rovers defender Steve Elliott (30) pulled one back before half-time but Mackail-Smith scored his second from the penalty spot in the 51st minute before he completed his hat-trick with a stunning individual strike in the 65th minute.
The visitors refused to lie down though and Shane Blackett's own-goal in the 54th minute and a strike from Jeff Hughes (74) reduced the deficit.
Scott Rendell thought he had made the points certain in the 83rd minute but Ricky Lambert netted two minutes later to ensure a nervous last few minutes for Posh.
