This is the fourth article in a series previewing the top NFL prospects by position for the 2010 draft.

This draft's TE class is heavily marred by injury, with neither ­Oklahoma's ­Jermaine Gresham nor Arizona's Rob Gronkowski having taken a snap this season because of injury, yet both still stack at the top of the heap. Gresham could have better benefited by departing a year ago, when he would have projected as the top tight end in the class. For much the same reason, Gronkowski is expected to depart in lieu of risking further injury. Overall, it's a solid crop of pass catchers with few standout blockers. Oklahoma's injured TE Brody Eldridge stands out most highly among blockers.

Note: "e" indicates that the height, weight or 40-time is estimated.

SENIOR PROSPECTS

1. Jermaine Gresham, Oklahoma
6-6e, 260e, 4.8e

A high school hoops standout who gave up basketball after suffering a torn anterior cruciate ligament in his left knee in high school, Gresham did not take a snap this season after surprisingly returning to school for his senior year. He sat out after having season-ending knee surgery to repair torn cartilage in his right knee. Gresham has been otherwise healthy for the Sooners, but having suffered ligament damage to both knees in a program that has done a fine job of concealing college injuries, Gresham could be affected by medical concerns. He possesses outstanding athletic ability, adjusts to the ball with ease and has proven he can be a factor in the receiving game since the time he arrived. Also functional as a blocker, Gresham still has a chance to be the first tight end drafted, but spring workouts and interviews will play into the equation.