Adam Idah scored his first goal of the season to round off Norwich's 4-0 away win at Huddersfield to send the Canaries into second in the table.
The Republic of Ireland striker was sprung from the bench early for the injured Josh Sargent, side-footing home the visitors' fourth goal in their impressive rout of the struggling hosts.
Sargent had been injured in the process of giving David Wagner's side the lead on 11 minutes, Ashley Barnes doubling their advantage six minutes later. Jonathan Rowe scored his fifth goal in five games shortly after the restart, Idah capitalising on vast priaries of space in the home defence to slip home the fourth.
Elsewhere, Republic of Ireland midfielder Scott Hogan slid in to score Birmingham City's opening goal in their 2-1 win at home to Plymouth Argyle at St Andrew's.
Ryan Hardie equalised for the visitors and it appeared set to be a frustrating afternoon for the hosts, until substitute Jay Stansfield delivered their third victory of the season with a glorious winner in the final seconds.
The lively Ryan Manning laid on both goals for Southampton as they beat QPR 2-1 at St. Mary's.
Striker Adam Armstrong fired in his fourth goal of the campaign to hide the gap left by absent Che Adams.
Earlier, Samuel Edozie's first professional goal and Jack Colback’s long-range daisy-cutter cancelled each other out within three first-half minutes.
Resurgent Leeds picked up their first three points of the season, coming back from a goal down to win a thriller at Ipswich 4-3.
It was the first loss of the Sky Bet Championship campaign for the former leaders, ending their 100 per cent record and a record-breaking run of 21 games without defeat.
A dynamic opening 20 minutes at Portman Road saw four goals, all coming from Leeds players.
Joe Rodon netted an own goal to give Ipswich the lead, before the visitors replied with strikes from Georginio Rutter, Wilfried Gnonto and debutant Joel Piroe.
Ipswich kept the game alive when Nathan Broadhead netted for the Tractor Boys with virtually the last kick of a pulsating first half.
However, Leeds struck the killer blow in the 75th minute when Luis Sinisterra netted a fourth goal.
Although Conor Chaplin pulled one back for Ipswich in added time, they could not find an equaliser.
Jayson Molumby impessed as West Brom recorded their second home win of the new Championship season as they eventually prevailed against 10-man Middlesbrough in a breathless encounter at The Hawthorns.
The Baggies stormed ahead in a frantic first half thanks to Cedric Kipre's 22nd-minute strike and John Swift's 27th-minute thunderbolt, but Boro replied a minute later through Emmanuel Latte Lath.
Albion struck quickly in the second period through Brandon Thomas-Asante to make it 3-1 before Tommy Smith was shown his marching orders for the visitors soon after.
Marcus Forss did convert a late penalty, but the Baggies made sure of the points when Jeremy Sarmiento struck in stoppage time.
Summer signing Duane Holmes scored the winner as Preston came from behind to beat Swansea 2-1.
Longstanding midfielder Alan Browne was instrumental in the creation of their opener, whipping in a cross, which was nodded home by Andrew Hughes.
Leicester left it late to preserve their 100& start to the season with a 2-1 win at Rotherham.
It had been a spirited display from the Millers but Kasey McAteer's double proved enough for Enzo Maresca’s side, who snatched maximum points with seven minutes left to play.
Ryan Wintle's late penalty earned Cardiff their first win of the season over Sheffield Wednesday with Millwall picking up a win over Stoke, while Coventry’s clash with Sunderland finished goalless.
In League One, Danny Mandroiu scored from the penalty spot and set up another as Lincoln City dispatched Blackpool 3-0, while Eiran Cashin was on target for Derby as they won 4-2 away to Peterborough.
