Has there ever been a better advert for the video assistant referee (VAR)?

Newcastle's 3-1 FA Cup fourth round win at Aston Villa was full of controversy with VAR once again the big talking point - even though it wasn't even in use.

For this season and the previous FA Cup campaign, it has not been used until the fifth round, with many fans looking forward to a return to football without interruptions from technology.

But referee Chris Kavanagh will have been wishing he had VAR to fall back on at Villa Park after an offside opener for the hosts, a blatant penalty for the visitors not awarded, plus at least three other controversial decisions that could have affected the outcome.

Ultimately, Newcastle - who were on the wrong end of the majority of the decisions - progressed, but manager Eddie Howe couldn't hide his disappointment with the officials.

Tammy Abraham's opener for Villa was offside, Lucas Digne's second-half handball should have been given as a penalty rather than a free-kick outside the box, while the French full-back was also fortunate to escape a red card for a reckless challenge...