Rotherham suffered their first league defeat since September as Blackpool pulled off a surprise 3-0 victory in South Yorkshire.
The Millers had gone nine games unbeaten in League One, but struggling Blackpool picked up the points to move to within a point of Exeter in 20th.
Blackpool Strike Early and Often
Blackpool raced into the lead in only the second minute when Danny Imray was slipped in by Josh Bowler and finished low beyond Cameron Dawson.