Jack Butland's own goal proved costly as Stoke City drew 1-1 at Leicester City, but Paul Lambert defended the England goalkeeper.
Stoke City missed the chance to move out of the Premier League's relegation zone after Jack Butland's own goal in a 1-1 draw at Leicester.
Chelsea, Manchester City, Manchester United and Tottenham were all kept apart in the draw for the last eight of the FA Cup.
The saga involving Leicester City star Riyad Mahrez was put to bed on Friday, according to manager Claude Puel.
Leicester City 1 Sheffield United 0: Riyad Mahrez marked his first start since January 20 with an assist as Leicester City continued their run in the FA Cup.
After returning to action against Manchester City, Riyad Mahrez starts for Leicester City in the FA Cup on Friday.
Claude Puel says Leicester City have welcomed Riyad Mahrez back into their squad and the Algerian looks better than ever.
Claude Puel says it is time for Leicester City to move on together following Riyad Mahrez's failed switch to Manchester City.
Manchester City head to Basel in the Champions League on Tuesday and a prolonged run would put Kevin De Bruyne in the Ballon d'Or mix.
Manchester City forward Sergio Aguero hailed star team-mate Kevin De Bruyne.