• Manager criticises offside goal and penalty not given• Warnock: ‘At this level these mistakes shouldn’t happen’Neil Warnock vented his anger on the standard of officiating in the Premier League after Chelsea defeated Cardiff in hugely controversial circumstances, leaving the Welsh club five points adrift of safety and nursing a simmering sense of injustice. César Azpilicueta was a yard offside when he headed an equaliser six minutes from time, prompting Warnock to say the Premier League had the “worst officials” and matches were being decided by “who you get in the middle and who has a flag”. Related: Ruben Loftus-Cheek seals controversial late win for Chelsea over Cardiff Continue readingreadfullarticle