Liverpool were left cursing referee Mike Riley, who turned down first-half penalty appeals when Tiago handled.

BBC: Liverpool 0-1 Chelsea

Ronaldo gathered up the loose ball and looked to be clearly fouled by Michael Brown, but referee Mike Riley waved play on.

BBC: CHOOSE A SPORT

The Manchester United boss was speaking in light of the Ashley Cole incident on Wednesday when the Chelsea player turned his back on referee Mike Riley.

BBC: Ferguson urges referees respect

Referee Mike Riley waved away Wigan's loud claims.

BBC: Paul Scharner celebrates his second goal of the season

When United won at Old Trafford, it was a game that fascinated me, but not for the right reasons, given the way everything was conducted, the refereeing from Mike Riley and of course the well-publicised aftermath.

BBC: SPORT | Football | Premiership | A sad feud that two clubs must stop

The match was not exactly being played in a charitable spirit and referee Mike Riley had to calm things down after Gustavo Poyet clashed with Roy Keane - Roberto Di Matteo and Teddy Sheringham getting unnecessarily involved.

BBC: Keane sees red as Chelsea triumph

That allowed Boro to go in search of a second and, moments after referee Mike Riley rejected a penalty shout as Carew climbed all over Emnes, Friedel made a fine save to deny Justin Hoyte from the edge of the box.

BBC: Middlesbrough 1-1 Aston Villa

United were denied a penalty by Mike Riley in last week's FA Cup semi-final defeat to Everton when Danny Welbeck appeared to be felled by Phil Jagielka, a decision that United boss Sir Alex Ferguson was quick to highlight in discussing Webb's decision.

BBC: Webb crumbled on penalty - Jenas