Hull City shipped eight goals to Wigan Athletic, whose survival hopes look increasingly positive at a time of worrying upheaval at the club.
Wigan Athletic humiliated Hull City 8-0 as the Championship relegation battle took an extraordinary twist - while West Brom might be wobbling near the top.
Kieran Dowell hit a hat-trick for Wigan, who remarkably led Hull 7-0 at half-time. Wigan sit in mid-table but are fighting for survival in the second tier because of an administration penalty hanging over the club, and this result was a huge step towards safety.
West Brom have looked on track for automatic promotion for weeks, but a slip in form from Slaven Bilic's men could see Brentford pip them at the post.
Second-placed West Brom could only draw 0-0 at home against fourth-placed Fulham, meaning Brentford can close to within a point of the Baggies with two rounds of games remaining should they beat Preston North End on Wednesday.
WONDER AT WIGAN
Wigan were the talk of English football after their first-half seven-goal show.
The only saving grace for Hull, and frustration for Wigan, was that no supporters were present to witness one of the most eye-catching results in English football all season.
Wigan savagely picked apart the free-falling Tigers and climbed to 13th place in the division.
They became the first team to score seven or more goals in one half of a match in either the Premier League or the three tiers of the EFL since Watford came from 2-0 down to beat Blackpool 7-2 with a second-half flurry in January 2015.
Aside from Dowell's treble, Kieffer Moore netted twice and there were goals for Kal Naismith, who set the ball rolling in the first minute, Jamal Lowe and Joe Williams.
Wigan stand to receive a 12-point punishment for entering administration, a troubling development that followed a recent takeover of the club, but they are fighting to avoid that meaning relegation.
The win neatly moved them 12 points clear of Hull, who sit 22nd and are a point adrift of safety, with the Tigers having a suddenly vastly inferior goal difference to Wigan.
BAGGIES BLOWING IT?
West Brom and Leeds have been trading first place in the Championship, but there could be a surprise in the promotion shake-up.
By failing to find a way through Fulham's defence, West Brom's hold on second place has become increasingly tenuous, given fast-finishing Brentford are on a seven-game winning streak.
Fulham's Anthony Knockaert hit the bar in the second half at the Hawthorns, where the outcome could have been even worse for West Brom.
Cardiff City kept a grip on sixth place as goals from Junior Hoilett and Lee Tomlin earned a 2-1 home win over Derby County.
Just outside the play-offs, Millwall sit seventh after a 1-0 home win over Blackburn Rovers, Mason Bennett with the only goal.
Ashley Fletcher and Patrick Roberts scored for Middlesbrough in a 2-1 win at Reading that carried Neil Warnock's side five points clear of the bottom three.
Liam Moore had put the hosts ahead before Boro, who appointed veteran manager Warnock as Jonathan Woodgate's replacement last month, turned it around.
Among those worse off than Boro, Huddersfield Town picked up a useful point in a 0-0 draw at Sheffield Wednesday, while second-bottom Luton Town were held 1-1 at home by QPR.
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