Diego Simeone insists his faith in Diego Costa is unwavering due to the striker's work rate, even as a missed penalty cost Atletico Madrid two points at Sevilla.

Atleti recovered from a first-half deficit to draw 1-1, thanks largely to the introduction of Costa and his nuisance factor from the bench at half-time.

The former Chelsea star had a goal disallowed shortly before Alvaro Morata equalised, but he then passed up the opportunity to clinch victory and send Simeone's men top of LaLiga.

Tomas Vaclik denied Costa from 12 yards, meaning he has still scored just twice in all competitions this season.

Simeone came to his player's defence, though, saying: "Diego is at his best physical moment, taking care of himself, training, working. He works but can't find the goal.

"When someone works like Diego, there are two options: either you are with Costa or not with Costa. If you give your all, like Costa, I trust him."

Sevilla likewise could have moved to LaLiga's summit with a victory, with Barcelona beaten at Levante earlier in the day, and Simeone believes Julen Lopetegui's side can be a threat this season.

"I see them doing very well. They always compete well," he said. "They have many players, a deep squad, which means they can make changes.

"They had two injured midfielders. Fernando did not play today. If they are consistent, they will compete."

However, midfielder Koke was frustrated Atleti were not able to beat Sevilla, believing their second-half performance – with Costa in the side – deserved to be rewarded.

"Especially in the second half, we did enough to win the game," he said. "There was a goal disallowed, we had a penalty, we created chances. We left two points on the field in such a complicated game.

"We have to continue working as we did in the second half. We recovered from the Sevilla goal and, in the second half, they had absolutely nothing. This is the standard – we have to keep working.

"We want victories because LaLiga is a bit strange, the big teams are not winning games, but we have to keep working."

Diego Simeone came to Koke's defence after the Atletico Madrid midfielder was singled out for criticism from sections of the Wanda Metropolitano support.

Club stalwart Koke was jeered for his performance during the narrow Champions League win over Bayer Leverkusen in midweek, although he later insisted he has "total confidence" in himself.

Atletico coach Simeone had some words of comfort as they prepared to face Athletic Bilbao in a third consecutive home match, suggesting even he has had to overcome boos at times.

"Of course the fans have jeered me, in the Calderon itself in some games," he told a news conference. "I remember being whistled just because I wasn't doing a good game.

"People are spontaneous, they say what they feel. They are used to a type of situation and that is what they want.

"It is us who have to strive to improve and not have that tension. It's not just Koke - it's everyone's responsibility."

Asked why Koke might now be targeted by fans, Simeone acknowledged the midfielder may need to go back to basics.

"He is occupying too many positions," the coach said. "Maybe he should focus more on his own.

"Often he wants to fix a lot with his tactical ability. He wants to do more than he is responsible for and ends up paying for what is not his responsibility.

"He wants to fix problems in other parts of the field which are not fixable. With the tactical ability he has and the information he has gathered over the years, this makes him want to do more than he has to do.

"He is a great professional and a great player."

As Simeone reflects on criticism of himself and his team, one issue for which Atleti regularly face scrutiny is a lack of threat in the final third.

Asked if this could ever complement the usual defensive stubbornness of his side, Simeone claimed "creativity" was not Atleti's problem.

"I believe that what we need is to be more practical, not to have more creativity," he said. "Creativity is not the only factor that improves you. Creativity is good and practicality is better."

Atletico Madrid captain Koke is confident highly rated new signing Joao Felix has the character to handle his €126million price tag.

Already a full Portugal international, Joao Felix became the fourth most expensive player in history when he moved from Benfica to Atletico in July.

The teenager hopes "to be like" compatriot and former LaLiga star Cristiano Ronaldo, although Diego Simeone insists comparisons between the pair are shallow.

Strong inner belief does seem to be one shared trait, though, with midfielder Koke a fan of the forward's attitude.

"He has a lot of personality," Koke told El Pais. "It's not easy to be 19 and have the pressure of what has been paid for him.

"He enjoys playing football. He has a lot of quality, but what I like most is the mischief [he creates], the dribbling. He likes to have the ball; he is not afraid to ask for it.

"You have to give him some time. If he plays two bad games, you can't kill him."

Atletico fans might need patience with more than one player following the arrival of seven senior new signings during the close season.

Among them are full-backs Kieran Trippier and Renan Lodi, who face a steep learning curve as they come to grips with Simeone's disciplined defensive structure.

"That is no problem because the coach will instil it," Koke said when asked about the attack-minded pair's aptitude at the back.

"If you're good going forward, Cholo makes you good in defence."

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