Doncaster inflicted a heavy defeat on rivals Scunthorpe as Dean Saunders’s side proved their promotion credentials.
Christian Ribeiro put David Cotterill’s cross into his own net under pressure from Martin Woods.
And the hosts took full control after the break when Cotterill followed up on Iain Hume’s parried effort.
Rob Jones made it 3-0 with a towering header and Billy Paynter added a fourth from 20 yards out soon afterwards.
Scunthorpe manager Brian Laws said: “What I saw in the second half - I’ve got more passion on the touchline than the type of players we have at this football club.
”They haven’t got the passion and the desire to move forward.
“What they are is a team that want to play nice football on a nice summer’s day.
“It doesn’t work like that - it’s hard work, it graft, it’s pride, it’s passion and they didn’t show that in the second half.”