Jesse Marsch acknowledged he had a feeling of "deja vu" as Leeds followed their early collapse at Arsenal by again conceding first and then seeing a player sent off.
After Luke Ayling, Dan James saw red this time, with Leeds the eighth Premier League team to have a player dismissed in the first half of consecutive matches.
That allowed Champions League-chasing Chelsea to capitalise, scoring through Mason Mount, Christian Pulisic and Romelu Lukaku. Mount now has 11 goals and 10 assists this term – his 21 goal involvements tied with Harry Kane for the most by an English player.
Leeds have nine home defeats – their most in the top flight since 10 in 1946-47 – and have conceded 37 home goals – their most in the top flight since 46 in 1959-60. Perhaps it is no surprise then that Chelsea completed a top-flight double over the Whites for the first time since 1936-37.