Stephen Hunt's second-half penalty rescued a second chance for 10-man Wolves at the Keepmoat Stadium after a pulsating third round FA Cup tie finished 2-2.
James Coppinger and Billy Sharp scored two goals in as many minutes to give Rovers the half-time lead after Nenad Milijas opened the scoring.
But Hunt's 58th minute spot-kick levelled matters and Wolves made it back to Molineux despite George Elokobi's red card for a clattering challenge on Coppinger.
West Ham's cup king Jonathan Spector was on target again but Avram Grant's struggling side made hard work of beating Barnsley 2-0 at Upton Park.
Spector's first goals in three years had sent West Ham storming into the Carling Cup semi-finals with a 4-0 victory over Manchester United.
The American, playing in the same central midfield role he occupied against United, scored the first and Frederic Piquionne a late second as West Ham booked their place in the fourth round of the FA Cup.
Picquionne's injury-time strike came moments after Barnsley had come within inches of snatching a draw, when Adam Hammill's deflected shot looped onto the bar.
Junior Hoilett's first goal for Blackburn was enough to beat Championship leaders QPR 1-0 after Rovers had missed a host of chances in their FA Cup third-round tie at Ewood Park.
Mame Biram Diouf twice, Ryan Nelsen, Gael Givet and El Hadji Diouf could all have given their side a comfortable lead. However, the 20-year-old Hoilett showed them all how it should be done 14 minutes from time with a shot from the edge of the penalty area.
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