Mike Riley admits there had been incidents where a referee's decision should have been overturned.
Napoli's 4-3 win against Fiorentina sets up an intriguing early clash with champions Juventus, who beat Parma 1-0 away.
It is the first time in La Liga that a penalty kick was ordered to be re-taken after a VAR review.
The International Football Association Board (IFAB) recently issued a circular on the recent changes in-laws, including the issue of the use of VAR in the taking of penalty kicks.
Lucas Moura rescues a point for Spurs by scoring with his first touch after coming on as a substitute before Gabriel Jesus has stoppage-time goal ruled out by VAR for Aymeric Laporte's handball.
Former pros and referees call for more transparency when it comes to the incidents that VAR reviews.
Wolves thought they had taken the lead when Dendoncker blasted in from close range but the goal was ruled out for a handball by VAR.
Gabriel Jesus and Sergio Agüero also made it to the scoresheet as Pep Guardiola's side start off the season with a comfortable win.
Howard Webb, who has spent the last two years managing the use of the technology in the MLS, believes concerns about VAR are misplaced.
Richard Masters suggests there could be fewer stoppages in the Premier League caused by on-field referees reviewing television footage.
Copa America organisers defend the use of video technology at the tournament after revealing VAR stoppages had averaged two minutes 26 seconds per intervention.
Brazil coach Tite meanwhile has no issues with the two VAR-assisted decisions that ruled out his side's goals.
England will face 2011 world champions Japan in their last group game in Nice.
English Premier League clubs vote to allow replays of incidents reviewed by Video Assistant Referees (VAR) to be shown on big screens in stadiums.
Neymar was infuriated by a late penalty awarded to United in PSG's last-16 second-leg defeat in Paris, calling the VAR system a 'disgrace'.
Real are 3rd in the standings on 48 points, 2 behind Atletico Madrid who beat Villarreal and still adrift of Barca, who won 4-2 at Sevilla.
Referee Mike Dean ignored an apparent elbow in the face suffered by Ayoze Perez that could have been a penalty and a possible red card.
Southampton are on a wretched run in the league, but Mark Hughes' side came close to winning in normal time.
The Premier League is set to use the Video Assistant Referee system from next season after clubs "agreed in principle" to the move.
Stephan El Shaarawy scored two goals for Roma in a controversial 4-1 win.
Although Manchester City easily beat Shakhtar Donetsk 6-0, the victory was overshadowed by an incorrect penalty decision, a fact not lost on coach Pep Guardiola.
Marco van Basten is to leave his role as FIFA's chief technical development officer at the end of the month to spend more time with his family.
VAR will be used in the Champions League from the 2019-20 season and will also be introduced at the 2020 European Championship.
Luis Suárez said that he preferred goal-line technology to VAR.
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