David Moyes, Issa Diop dan Josh Cullen, diarahkan meninggalkan Stadium London menjelang pertembungan Piala Liga Inggeris (EFL) West Ham dengan Hull City selepas mereka diuji positif COVID-19.
West Brom will play in the Premier League next season, where they could yet be joined by Swansea City, but Wigan Athletic are in League One.
With Brentford having faltered earlier, Fulham beat Sheffield Wednesday to keep their top-two hopes alive.
Hull City shipped eight goals to Wigan Athletic, whose survival hopes look increasingly positive at a time of worrying upheaval at the club.
Hull City fought hard but were beaten at West Brom, who move back to within a point of Championship leaders Leeds United.
Hull City claimed a first Championship win since New Year's Day to leapfrog Middlesbrough and put Stoke City in the bottom three.
West Brom dominated against Birmingham but could not score, while Louie Sibley and Rhian Brewster produced heroics for Derby and Swansea.
Fulham players account for two of the three positive coronavirus test results produced in the latest round of Championship testing.
Hull City mengesahkan terdapat dua kes positif Covid-19 dalam pasukan Liga Kejuaraan itu.
Two unnamed individuals at Hull City will self-isolate for a week after testing positive for coronavirus.