Battling Leicester played for an hour with 10 men to earn a hard-fought draw against Championship leaders Newcastle.
Richie Wellens was dismissed after 30 minutes, receiving a second yellow card for a foul on Wayne Routledge.
Patrick Van Aanholt had the visitors' best chance, but Foxes keeper Chris Weale tipped his shot around the post.
Alan Smith, Andy Carroll and Kevin Nolan also all went close with headers while at the other end Steve Harper made a fine save from Matty Fryatt.
Martyn Waghorn also fired wide during a rare home attack but Nigel Pearson's side were forced to defend for large periods to gain their point.
But despite the disappointment of failing to win, the point extends Newcastle's unbeaten league run to 14 matches and sees Chris Hughton's side stretch their lead at the top of the table to four points.
Leicester boss Nigel Pearson: "I thought we were the better side with 11, and the better side with 10, but it is only one point.
"We still have aspirations to be involved in the play-offs. We have been in a bit of a rut recently so today was an important stepping stone for us."
[On Wellens' dismissal and City's two penalty claims]: "I've not reviewed the incidents but I will be having my say on them later on.
Newcastle manager Chris Hughton: "I've mixed emotions about the game. They were down to 10 men for so long and it's disappointing we were not able to capitalise on that.
"But they played with great spirit and what often happens when you go down to 10 men it galvanises the team.
"The sending off also seemed to lift the crowd who felt aggrieved at what had happened."
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.