The defender has taken over from Leighton Baines in recent weeks.
The defender has found himself back in the first team of late, having managed to battle back to full fitness following a leg break back in 2014.
There is fierce competition for the left-back spot he occupies though, with England number one Leighton Baines having been a regular in the role for a number of years.
Youngster Brendan Galloway has also excelled there this season, while there is also Luke Garbutt to consider as a future holder of the position.
And Oviedo believes that they have some of the best left-backs in the Premier League at their disposal.
“We are in the top league in the world,” he told evertonfc.com
“If you are in one of these teams then you know you have very good competition for places. I think we have some of the best left-backs in the league.”
“Every one of us needs to work hard in training and in the games to help the team. Whoever plays needs to give all they can give.”
Oviedo will now be hoping he can continue the run of first team football he has enjoyed in recent weeks.
He is sure to face a fight to do so though, with Baines certainly a fan favourite, while he is also keen to impress to secure himself a place in England’s squad for Euro 2016.
The Costa Rican has impressed when given the chance though, suggesting Roberto Martinez is likely to stay in the role for the foreseeable future