Championship - Round-up: Ipswich hit six in romp
A calamitous own goal from Sam Hird set Ipswich on their way before Colin Healy and Wickham added further goals before half time to put the visitors in a commanding position.
But Paul Jewell's men refused to take their feet off the accelerator as Gareth McAuley and two further goals from Wickham further punished a shell-shocked Doncaster for an abject display.
Michael Chopra snatched the opening goal on the brink of half time before Steven Thompson levelled the scores in the 83rd minute.
At Vicarage Road it was Malky MacKay's half time substitutes Matthew Whichelow and Adam Thompson who came up with the goods to rule out earlier strikes from Sean St.Ledger and Leon Clarke in a 2-2 draw.
And Daniel Bogdanovic proved that lightning really can strike twice with his second equalising goal from the penalty spot inside a week, repeating the feat first achieved on Saturday against Crystal Palace, after Shane Long had put Reading in front in a 1-1 draw.