The biggest crowd of the season watched City pick up their fifth straight win to remain top of the Championship.
Liam Lawrence's first half wonder strike was enough to secure maximum points against fellow promotion hopefuls Ipswich Town.
Tony Pulis made two changes ahead of the match, with Carl Dickinson coming in at left back for the suspended Danny Pugh.
While Salif Diao was dropped to the bench after starting the last four games, with Richard Cresswell returning to the starting line up following his goalscoring exploits against Scunthorpe last Friday.
The match began and Cresswell was immediately at the heart of the action. He did well on the left flank to find space and fire the ball in to the Ipswich penalty area, but Mamady Sidibe could only head the ball straight at Stephen Bywater.
Two minutes later Glenn Whelan was flattened on the edge of the 18-yard box, to give Liam Lawrence the chance with a dangerous free kick.
However, after being teed up by Rory Delap he fired the ball well over the cross bar.
A series of trademark Delap throw-ins caused numerous problems inside Bywater's six yard box, but the Tractor Boys defence scrambled the ball away from danger.
Long rang strikes from Jon Walters and Tommy Miller warmed the hands of Steve Simonsen in the City goal, before Delap latched onto Lawrence's quick throw in to force Bywater in to a reaction save at the near post.
Alan Lee should have put Jim Magilton's side in to the lead after 20 minutes, but he somehow blazed the ball over from just five yards.
Glenn Whelan was next to try his luck for City with a 30-yard pile-driver, which former West Ham stopper Bywater did well to gather.
The Potters managed to find a breakthrough after half an hour through Ryan Shawcross, however the linesman had his flag up for offside.
The hosts piled the pressure on in a frantic five minute spell. Firstly Jason De Vos looked to have handled inside the penalty area, before Fuller launched a dipping half volley inches wide of the left hand post.
With the match looking likely to end all square at the half time interval, Lawrence popped up with an absolute screamer to put the Potters one nil up.
The former Sunderland man picked the ball up 35-yards out, before advancing forward and smashing the ball in to the top right hand corner from outside the penalty area for his thirteenth of the season.
Ipswich came out for the second half and changed things around. Danny Haynes was brought on at the expense of Alan Quinn.
Lawrence continued to take the game by the scruff of the neck, and when he danced his way past two defenders he fired goalwards, but straight in to the palms of Bywater.
Town boss Magilton was ordered to the stands five minutes in to the second half after complaining about the ball boys to the referee.
Malian international Sidibe was inches away from bagging his second goal of the season in explosive fashion.
Lawrence whipped in a dangerous ball which the striker caught hold of with an overhead kick, before the ball bounced just wide of the post.
Macedonian international Velice Sumulikoski fired a long range effort towards goal in the 70th minute, and Simonsen had to be aware to parry the ball around the post.
Diao was brought on to replace Sidibe in the 80th minute to help shore up the defence, as Ipswich through everything at the Potters.
City held on to their lead and picked up another three points.
