An eighth consecutive win for Championship high-flyers Brentford kept the pressure on Leeds United and West Brom in the race for promotion.
West Brom and Leeds looked to have the automatic promotion places locked down, but Brentford are making a late push in the Championship.
Ethan Pinnock's 85th-minute header secured Brentford a sixth successive league win, closing the gap on the top two in the table.
In a big day at both ends of the Championship table, Leeds United tightened their grip on top spot and Stoke City climbed clear of danger.
Luton Town claimed a surprising point that could impact the title race as Brentford continued their promotion charge.
Leeds can go three points clear at the Championship summit on Saturday after West Brom lost 1-0 to fellow promotion hopefuls Brentford.
West Brom dominated against Birmingham but could not score, while Louie Sibley and Rhian Brewster produced heroics for Derby and Swansea.
The EFL has confirmed eight people from Championship clubs tested positive for COVID-19 in the most recent round of tests.
Fulham's London derby against Brentford will be the first Championship game back after the coronavirus-enforced break.
Preston North End succumbed to West Brom on Tuesday, while promotion hopefuls Brentford and Bristol City lost on their travels.