Philadelphia Eagles quarterback Nick Foles believes that a player has to win on a regular basis and make key plays to be regarded as a franchise quarterback.

Foles has won the starting job at the Eagles this season as he displaced Michael Vick due to his excellent form, throwing 19 touchdowns to zero interceptions to help guide his side to a 7-5 record.

When asked what makes a good quarterback, Foles told reporters: "Winning. You have to be smart and you have to make plays. You see all of the franchise quarterbacks and they make some clutch throws, some big-time throws that not many people can make.

"It's just continuing to improve execution, being smart with the football, and all of the little things. The big thing with the franchise quarterbacks, and this is for a quarterback on any level, is your teammates have to believe in you."

The Eagles face the Detroit Lions on Sunday.