Coventry boss Frank Lampard questioned why his side were not given a penalty after a trio of decisions went against them in defeat at Everton .
Thierno Barry's double and Kiernan Dewsbury-Hall's late goal helped the hosts come from behind to win 3-1 on Friday .
Yann Gboho gave Coventry the lead after the break, yet the visitors felt they should have had a first-half spot-kick.
James Tarkowski tugged Caleb Yirenkyi's hair while jumping for a ball, with referee Stuart Attwell dismissing the Sky Blues' claims.
The rules have been relaxed around hair pulling this season and it does not automatically mean a foul or a red card, with excessive force and intent also being taken into consideration - but former Everton boss Lampard believes the officials got it wrong.
He said: "They're saying it's not enough of a pull and I think it's a hard area to be in. What is a hair pull?…