Jamie Vardy scored his first goal since November as Leicester, the Championship leaders, weathered a storm from Birmingham, strugglers in the same division, to reach the fifth round of the FA Cup with a 3-0 win at the King Power Stadium.
Birmingham, unbeaten in four matches since Tony Mowbray succeeded Wayne Rooney, had dominated the first-half opportunities. Jay Stansfield hit the post and Jakub Stolarczyk, the Leicester keeper, had to make five saves in the opening 45.
