Under Armour / Scout.com Combine held in Tempe, AZ on Saturday May 24, 2008.

The players that participated were weighed, measured, and then tested in the Shuttle, Vertical Jump, 3-Cone, 40 yard dash, and Standing Broad Jump. 

Explanations for each drill are listed below.

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Players were tested outdoors on a grass field with a slight breeze. 

Running Backs

Receivers

Offensive Line

Quarterbacks

Defensive Line

Linebackers

Defensive Backs

Class of 2010

Drill Explanations from: The Redzone:

SH - 20 Yard Shuttle
The 20 yard shuttle is one of the most underrated tests at the combine. The 20 yard shuttle is a test of speed, explosion, and changing of directions. Technique is also important here. Each prospect will be timed by seconds in how fast they can go 5 yards to their left, then 10 back to the right, and finishing 5 yards to their left in one straight line.

The Drill: The player straddles a yard line and puts one hand down in a three-point stance. He can start by going either right or left. Let's say he starts at the 5, with the goal line to his right. He runs 5 yards to his right and touches the goal line with his right hand. He then runs 10 yards to his left and touches the 10-yard line with his left hand. He finishes by running back to the 5.

What it tests: Lateral quickness, coordination and change of direction.

VJ" - Vertical Jump
The vertical jump isn’t really the most important test for football players. It is basically a test of explosion and power. Technique is huge here. Each player will be tested by a machine that will measure how high your fingers touch when going directly up in the air. The vertical jump is the most important for receivers and defensive backs.

The Drill: Years ago, players jumped up to touch a wall that was marked in blue chalk. Now, the player stands flat-footed and raises his arm straight up.  The pole is lowered to that height. The player then jumps straight up and hits as many plastic flags as he can. The flags, spaced half an inch apart, rotate when hit.

What it tests: Vertical leg explosion.

LC - 3 Cone Drill
The 3 Cone Drill is the newest addition to the NFL scouting combine, replacing the “4 Cone” or “Box” drill. The 3 cone drill is also a test of speed, explosion, and changing directions. Each prospect will be timed by seconds in how fast they can sprint ten yards, back, back again and around a third cone parallel to the 2nd.

The Drill: Three orange cones are placed on the field forming an "L." Cone 1 is at the end of the L, Cone 2 is at the corner of the L and Cone 3 is at the top of the L. There are 5 yards between each cone. The player starts by getting down in a three-point stance next to Cone 1. He runs to Cone 2, bends down and touches a line with his right hand. Then he turns and runs back to Cone 1, bends down and touches that line with his right hand. Then he runs back to Cone 2 and around the outside of it, weaves inside Cone 3 (as if he were running a figure eight), then cuts tightly around the outside of Cones 3 and 2 before finishing at Cone 1 in a full sprint.

What it tests: Speed, quickness, flexibility, change of direction, body control.

40 - 40 Yard Dash
The 40 yard dash is a test of speed, power, explosion, and a little bit of conditioning. Each prospect will be measured by the second and how long it takes you to complete a 40 yard sprint.

The Drill: From a three-point stance, a player runs 40 yards as fast as he can. Players get hand-held times (by scouts using stopwatches)

What it tests: Pure speed from Point A to Point B under ideal conditions (indoors, AstroTurf, no weather obstacles).

SBJ - Broad Jump
The broad jump is similar to the vertical jump. Although the broad jump measures how far you jump not how high. Technique is also important here. It is also similar to the long jump in track and field, but here the player will not run, but rather jump from a standing position. The broad jump is the best test for lower body strength, explosion, and power. The broad jump is the most important for running backs, linemen, and linebackers.

The Drill: he player puts his toes on a line and leaps forward. Distance is measured from the line to where his heels land.