Plymouth midfielder Morgan Whittaker scored a dramatic last-minute winner as Argyle beat Blackburn 2-1 at Home Park.
Plymouth swept into a 15th-minute lead against the run of play through on-loan Burnley striker Michael Obafemi, as he hit the ball on the spin, scoring from 10-yards.
Blackburn substitute Joe Rankin-Costello levelled when he headed home in the 86th minute from Dominic Hyam's cross.
Whittaker the nodded home Adam Randell's header back into the goalmouth from Lewis Gibson's deep cross as Argyle piled on the pressure in the seventh and final minute of stoppage time.
Oxford substitute Louie Sibley's first goal for the club denied Portsmouth their first win of the season in a 1-1 draw at Fratton Park.
Republic of Ireland U21 international Mark O'Mahony headed Pompey into a second-half lead, while Elias Sorensen's early penalty for the hosts was saved.
Jesurun Rak-Sakyi struck twice on his birthday as Sheffield United beat Luton 2-0 at home to move level on points with Championship leaders Sunderland.
Crystal Palace loanee Rak-Sakyi marked his 22nd birthday with a goal in either half as the Blades extended their unbeaten league start to nine matches.
The Hatters slipped to their fifth league defeat of the season and sit one point above the relegation zone.
Burnley missed the chance to go top after they were held 0-0 at home by Preston in a bad-tempered Lancashire derby, with referee Gavin Ward brandishing seven yellow cards.
Preston's Emil Riis had an early effort disallowed for offside, which TV replays showed to be the wrong decision.
West Brom's winless league run extended to three matches as they missed the chance to go level at the top after being held 0-0 by Millwall at The Hawthorns.
Norwich maintained their climb up
soccer
Sport
O'Mahony
Morgan Whittaker
Michael Obafemi
Lewis Gibson
Emil Riis
Championship