O’Connor struck six minutes into the second half to cancel out Paul Furlong’s 20th-minute opener.

Third-placed Bristol City are now behind QPR only on goal difference after winning 1-0 win at Peterborough.

Substitute Tommy Doherty netted the Robins’ winner 15 minutes from time at London Road.

Swindon remain firmly in the play-off picture after killing off a comeback from struggling Stockport to win 4-2 at Edgeley Park.

The Robins raced into a 3-0 lead with goals from Tommy Mooney, Brian Howard and Andrew Nicholas inside the opening 18 minutes.

Stockport pulled two back through Mark Robertson and Stuart Barlow, but Mooney made sure for Swindon late on.

Wrexham climbed above play-off rivals Barnsley with a 1-0 win over the Yorkshire side at the Racecourse Ground.

Chris Llewellyn’s 24th-minute goal proved enough for the Welsh side despite the sending off of Dennis Lawrence midway through the second half for a professional foul.

Brighton slipped up as they suffered a surprise 2-1 defeat to 10-man Grimsby.

Phil Jevons grabbed the winner for the Mariners 15 minutes from time after the teams had traded early goals through Isaiah Rankin and Trevor Benjamin.

Grimsby had goalkeeper Aidan Davison sent off after a clash with Benjamin, but they held on to hand caretaker boss Graham Rodger off to a winning start.

Glynn Hurst struck early and David Reeves tucked away a second-half penalty as Chesterfield recorded a 2-0 win over Rushden & Diamonds at Saltergate.

James Hayter netted seven minutes from time as Bournemouth overcame Notts County 1-0 and Port Vale beat Oldham by the same scoreline thanks to a Stephen McPhee goal.

Sheffield Wednesday’s 1-0 win over Hartlepool at Hillsborough was secured by a penalty from Guylain Ndumbu-Nsungu 10 minutes from time.

Bottom side Wycombe remain two points adrift at the foot of the table after a goalless draw with Luton at the Causeway Stadium.