Port Vale striker Akpo Sodje scored four goals as they ran riot to beat struggling Rotherham at Millmoor.
Sodje struck an 18-minute hat-trick in the first half, first heading past Gary Montgomery and then firing in after the hosts failed to clear a cross.
He completed his treble with an unmarked header from Danny Sonner's corner and George Pilkington made it 4-0 by rifling home a Sonner free-kick.
Delroy Facey's shot pulled one back but Sodje slotted in again to make it 5-1.
Rotherham: Montgomery, Streete, Fleming, Mills, Hurst, Newsham (Duncum 66), Cochrane (King 46), Brogan, Woods, Facey, Henderson.
Subs Not Used: Cutler, Sharps, O'Grady.
Goals: Facey 67.
Port Vale: Anyon, Weston, Pilkington, McGregor, Talbot, Kamara (Lowndes 68), Sonner (Miles 70), Hulbert, Whitaker, Constantine, Sodje.
Subs Not Used: Musselwhite, Walker, Cardle.
Goals: Sodje 11, 25, 29, Pilkington 44, Sodje 78.
Ref: R Booth (Nottinghamshire).