The Iron's point at the Keepmoat Stadium moves them onto 52 points, while Nottingham Forest failed to take advantage as they were held 0-0 at Swansea.
They drop down to third, behind the Robins on goal difference. City stunned Oldham with a 3-0 win at Boundary Park.
Enoch Showunmi, who missed a penalty, and Jamie McAllister had them 2-0 at the break. Wayne Andrews, a former Oldham player who only moved to City on loan from Coventry on Friday, added the third goal after the break.
Leon Best's goal moved Yeovil fifth, firmly in the frame for a play-off spot, with a 1-0 win over Brentford.
The Bees, who had David Partidge and Che Wilson sent off, are six points away from the final safe spot in the table.
Blackpool claimed the final play-off spot after Keith Southern grabbed the only goal of the game in a 1-0 win at Leyton Orient.
Neil Harris, Chris Zebroski and Darren Byfield (2) were on target as Millwall eased their relgation fears by hammering second-bottom Rotherham 4-0.
Cheltenham drew 1-1 with Gillingham at Whaddon Road in a result which does their hopes of avoiding relegation little good.
John Melligan levelled for the Robins after Bas Savage had put the Gills ahead after just six minutes.
Visiting defender Ian Cox was sent off after collecting two bookings.
Bournemouth remain in the drop zone after a 2-1 loss to Huddersfield at Dean Court.
Crewe Alexandra were 2-0 winners from their long-haul trip to Carlisle United.
The game between Port Vale and Northampton Town was called off after because of a waterlogged pitch.
They drop down to third, behind the Robins on goal difference. City stunned Oldham with a 3-0 win at Boundary Park.
Enoch Showunmi, who missed a penalty, and Jamie McAllister had them 2-0 at the break. Wayne Andrews, a former Oldham player who only moved to City on loan from Coventry on Friday, added the third goal after the break.
Leon Best's goal moved Yeovil fifth, firmly in the frame for a play-off spot, with a 1-0 win over Brentford.
The Bees, who had David Partidge and Che Wilson sent off, are six points away from the final safe spot in the table.
Blackpool claimed the final play-off spot after Keith Southern grabbed the only goal of the game in a 1-0 win at Leyton Orient.
Neil Harris, Chris Zebroski and Darren Byfield (2) were on target as Millwall eased their relgation fears by hammering second-bottom Rotherham 4-0.
Cheltenham drew 1-1 with Gillingham at Whaddon Road in a result which does their hopes of avoiding relegation little good.
John Melligan levelled for the Robins after Bas Savage had put the Gills ahead after just six minutes.
Visiting defender Ian Cox was sent off after collecting two bookings.
Bournemouth remain in the drop zone after a 2-1 loss to Huddersfield at Dean Court.
Crewe Alexandra were 2-0 winners from their long-haul trip to Carlisle United.
The game between Port Vale and Northampton Town was called off after because of a waterlogged pitch.