Cristiano Ronaldo did not appear to deserve his red card while making his Champions League debut for Juventus, says Diego Simeone.
Ronaldo was dismissed in the first half of Juve's 2-0 Group H win at Valencia on Tuesday, having clashed with defender Jeison Murillo off the ball.
Replays appeared to indicate Ronaldo pulled Murillo's hair and the former Real Madrid star was inconsolable as he left the Mestalla pitch.
VAR is not yet used in the Champions League, with Juve head coach Massimiliano Allegri calling for the technology to be introduced after Ronaldo's red.
And Atletico Madrid's Simeone suggested he felt Ronaldo - in danger of missing a return to Manchester United through suspension - was unfortunate.
"With VAR, seeing the way in which Ronaldo was sent off, we have to pay attention to what is done," Simeone told a news conference ahead of Saturday's LaLiga trip to Getafe.
"He did not seem to have done anything and was dismissed. The referees have help and that conditions what happens in the field.
"From our place we have to make the game that we believe and we will face a tough team.
"I feel like VAR is always in favour of justice in the game, for sure it will evolve with time.
"My feeling is that it brings more justice to the game than any other thing, of course it can make mistakes and let's hope they will fix them."
Although Atleti won 2-1 away to Monaco in their Champions League Group A opener, Simeone's side have been in poor form in LaLiga.
A haul of just five points from their opening four matches leaves Atletico well off the pace set by leaders and defending champions Barcelona.
And Simeone hinted he could seek to change Atletico's style, his team having kept one clean sheet in six competitive matches this term.
"In the same way that we conceded more goals, in some matches we had the famous possession in favour," Simeone said. "I prefer that we let in fewer goals and have less possession.
"I try to find a way to improve the team, against Eibar we should have won, we deserved a better result, but we did not have the precision to win.
"In my head I have to improve as a team, grow match after match and better see the people who have arrived. Gelson [Martins] did not play, [Nikola] Kalinic almost did not, [Santiago] Arias is injured... The most important are those who have been playing with us for some time.
"[Gelson] arrived recently, he is young and we have to find ways to exploit his characteristics. He is better against rivals who have space, what we are looking for is the right moment. He is increasingly interpreting what the team needs better."
|Manning on trade rumours: It´s hard to imagine being with another organisation|
|Shaw: Man United showed too much respect to Juve|
|CAF Champions League Review: Al Ahly to face ES Tunis in final|
|76ers star Simmons dealing with back tightness|
|Roma boss Di Francesco hails ´extraordinary´ Dzeko|
|Pizzi and Jardel rue Benfica´s Ajax reverse|
|Championship Review: Leaders held at home, Smith suffers first Aston Villa defeat|
|Mourinho suggests Manchester United must spend to rejoin European elite|
|Manchester City reached their peak against Shakhtar - Guardiola|
|I really missed that winning feeling – Kroos|
|Lopetegui believes Real Madrid win can be turning point|
|Allegri: Juventus still making too many mistakes|
|Cole leads unbeaten Avellino to overtime victory|
|Mourinho hails ´amazing´ Chiellini and Bonucci after Juventus outclass United|
|Simeone glad to have Costa back for Dortmund clash|
|Lopetegui to remain in charge for El Clasico - Butragueno|
|Isner saves two match points to beat Norrie, Federer grinds out victory|
|Icardi happy at Inter ahead of Barca return|
|Marcelino satisfied with point after Valencia hold on at Young Boys|
|Hoffenheim 3 Lyon 3: Joelinton rescues a point after Kramaric´s double|
|Ajax 1 Benfica 0: Last-gasp Mazraoui seals dramatic win|
|Roma 3 CSKA Moscow 0: Dzeko turns on the style|
|Kovac lauds dominant Bayern|
|Shakhtar Donetsk 0 Manchester City 3: Silva sparkle to dominant display|
|Manchester United 0 Juventus 1: Dybala downs Mourinho´s men on Ronaldo´s return|
|Real Madrid 2 Viktoria Plzen 1: Benzema and Marcelo´s goals give holders first win in six|
|Lakers´ Rondo denies spitting on Rockets´ Paul|
|Robben and Rafinha want more from Bayern|
|Federer survives Krajinovic scare to maintain Basel run|
|Green accuses NBA of double standards, calls Lakers-Rockets suspensions ´garbage´|
|New York Giants send Apple to Saints|
|Morgan aims to solve Colombo mystery after record ODI defeat|
|AEK Athens 0 Bayern Munich 2: Lewandowski helps to further ease Kovac woes|
|Young Boys 1 Valencia 1: Hoarau penalty denies Marcelino´s men|
|Mourinho walks to Old Trafford as United arrive late again for Champions League|
|Bale and Benzema back for Madrid as Lopetegui rings changes|
|Carr denies ´fractured relationship´ with Raiders team-mates|
|De Bruyne to start for Manchester City against Shakhtar Donetsk|
|France lose Le Roux and Fofana for November Tests|
|Martino to leave Atlanta United amid Mexico links|
|Pochettino cautious over Eriksen return|
|Ancelotti an inspiration for PSG boss Tuchel|
|Persepolis 1 Al Sadd 1 (2-1 agg): Iranians into first AFC Champions League final|
|Wales boss Gatland returns to New Zealand after father´s death|
|Sri Lanka hand England their heaviest ODI defeat|
|Nuggets guard Will Barton undergoes surgery|
|Surprise package Svitolina closes in on semi-final berth|
|Alexander-Arnold targets glory at home and abroad|
|Pogba relishing emotional Juventus reunion|
|Alba hopes Lopetegui keeps Real Madrid job|
|Valverde not expecting Messi magical recovery|
|Wozniacki calms fears over knee injury|
|Maybe it´s my interviews - Klopp on Liverpool´s room for improvement|
|Language no barrier to Dortmund dangermen Reus and Alcacer|
|EPCR confirms no replay of Bath-Toulouse Champions Cup fixture|
|F1 Raceweek: Five the magic number as Hamilton eyes Mexico repeat|
|RFU to introduce in-season breaks for players|
|Nainggolan misses Barcelona trip|
|Wozniacki battles through knee complaint to down Kvitova|
|Alcacer: Two seasons at Barcelona not lost|
|Henderson, Keita to miss Liverpool´s Red Star clash|
|Khabib holds talks over Mayweather Moscow fight|
|Wolf in for Titz as Hamburg try to stop slump|
|Davies released from Wales squad as Evans comes in|
|Mbappe on track to match Messi and Ronaldo, says Giuly|
|Coleman, Kipchoge and Lyles among IAAF Male World Athlete of the Year shortlist|
|Serena Williams will win slams again sooner or later, says Seles|
|You always want the best – Ter Stegen open to Neymar return|
|Xavi: My teams will never use Mourinho´s style|
|I knew what I got myself into - LeBron appreciates Lakers are a work in progress|