Big Question: Can Pat White cut it?

Can second-year Miami Dolphins quarterback Pat White show he was worth the 44th overall draft choice?

White is the NFL's most fascinating fourth-string quarterback.

He was the fourth quarterback selected in the 2009 draft, but he has no guarantees. He plays for a team that's quick to admit a personnel mistake and unload it from the roster.

White was drafted to enhance what the Dolphins do with their Wildcat package. They viewed him as a scat back disguised as a passer. But he had a disappointing rookie campaign, and circumstances have changed.

To review White's first year: 13 games, 0 for 5 passing, 21 rushes for 81 yards as the second quarterback on game days. His season ended a little sooner -- and much more scarily -- than the rest of the Dolphins. In the finale, Pittsburgh Steelers defensive back Ike Taylor knocked him unconscious, requiring White to be carted off on a backboard.

Now White enters the season fourth on the depth chart behind starter Chad Henne, Tyler Thigpen and veteran Chad Pennington.

Dolphins coach Tony Sparano has spoken highly of White. Sparano recently called White's offseason "outstanding" and said White's slight frame has gained 18 pounds while losing body fat since leaving West Virginia.

At best, it appears White is competing with Thigpen for the roster's third QB spot. Sparano, a former Dallas Cowboys playcaller, has compared Thigpen to Tony Romo in their ability to keep plays alive with their mobility and arm strength.

Unless there's an injury or a position change, White might not have much time to prove himself as a Dolphin.