Who is the biggest disappointment?

Our experts get to have their say every Tuesday, debating the week's burning questions in our Turn 4 wrangle.

On Wednesdays, it's Your Turn.

That's when we select one hot-button topic and let y'all have at it. This week's moderated discussion is closed, but we invite you to leave a comment in the Conversations section below.

Prefer Twitter? You can tweet your response using the hashtag #ESPNYourTurn.

This week's topic: Which Sprint Cup driver has been the biggest disappointment in 2013? Three-time champion Tony Stewart is 20th in points and has only two top-10s. Four-time champ Jeff Gordon is 15th with three top-10s, including a pair of top-5s. Brad Keselowski is 10th with four top-5s, but the defending champion has finishes of 32nd or worse in three of the past four points races.

What say you, NASCAR Nation? Which driver has disappointed you most?

Now, have at it …