Lloyd Dyer's goal has given Leicester City a half-time lead against Birmingham City at St Andrew's.
Leicester had the game's first chances through Matty James and Jamie Vardy, who was denied by a last-gasp Will Packwood tackle six yards from goal.
Darren Randolph was forced to tip over James's curling long-range effort shortly after, as the league leaders tried to make the breakthrough.
Nigel Pearson's men did finally get the goal they wanted courtesy of Dyer, who burst onto David Nugent's defence-splitting pass to slot home.
Anthony Knockaert nearly doubled the away side's advantage, but his shot from a Dyer pass was saved from close range by Randolph.
