Saturday's game will be the 58th match between the two sides since their first game in 1936...
Coventry City face Sheffield United this Saturday in their second League One game of the 2014/15 season at Sixfields.
The two sides have played each other 57 times and incredibly, City have won the fixture 19 times, drawn the fixture 19 times and the Blades have beat City 19 times. So, it is all to play for.
Before the two sides face other this weekend, we look back on some of the recent classic matches.
Date: Sunday, October 13th, 2013
Competition: League One
Score: Coventry City 3-2 Sheffield United
The Sky Blues welcomed the Blades to Sixfields looking to continue their blistering start to the 2013/14 League One season.
Striker Leon Clarke put City in front in the sixth minute before Callum Wilson put City further ahead with a great strike after good work from Carl Baker just before the break.
The Sky Blues continued their goal-scoring form after half-time when striker Leon Clarke found the bottom corner to put City into a 3-0 lead.
But the managerless Blades fought back in the second half as substitute Lyle Taylor scored a free-kick on the hour and then a header ten minutes from time to set up a tense finale, which City just about survived.
Date: Friday, February 1st, 2013
Competition: League One
Score: Sheffield United 1-2 Coventry City
The Sky cameras were at Bramall Lane for the Friday night kick-off under the floodlights as City triumphed thanks to a late Leon Clarke goal.
The City striker gave the Sky Blues the lead after 14 minutes with a typical poacher's finish after good work from Stephen Elliott.
Blades striker Dave Kitson leveled for the hosts with 17 minutes to go and the game looked to be heading to a draw.
With just three minutes remaining, Clarke bagged a second to seal a classic City away win.
Date: Tuesday, December 4th, 2012
Competition: Johnstone's Paint Trophy
Score: Coventry City 1-1 Sheffield United (4-1 win on penalties)
The Sky Blues went through to the regional semi-final of the Johnstone's Paint Trophy thanks to a penalty shoot-out win.
The game finished 1-1 after 90 minutes when an own goal from Harry Maguire was cancelled out by a Blades leveler from David McAllister.
The Sky Blues sailed through the shootout though as Gary McSheffrey, David McGoldrick, Carl Baker and John Fleck all dispatched their penalties with Ryan Flynn and Maguire missing theirs to give the Sky Blues a 4-1 spot kick victory.
The Sky Blues went on to beat Preston North End in the semi-final but lost over two legs against Crewe Alexandra in the Area Final.