10 biggest freak athletes at NFL combine

As 2017 NFL draft prospects engage in drills and tests at the scouting combine in Indianapolis this week, let's take a look at which players already have the extreme skills and athleticism that will turn heads. Here are the 10 biggest freak athletes who are sure to show off their athletic prowess during combine workouts:

Myles Garrett, DE, Texas A&M

In 2014, 6-foot-5, 266-pound defensive lineman Jadeveon Clowney ran a 4.53 40-yard dash, recorded a vertical jump of 37.5 inches and had a broad jump of 10 feet, 4 inches at the combine before the Texans drafted him first overall. To provide some perspective, all of those numbers are better than the five-year combine averages for wide receivers. Garrett, who is listed at 6-5 and 261 pounds, has the athleticism to rival and potentially surpass that performance. Those are lofty expectations but realistic when you consider the explosive get-off, impressive closing speed and flexibility he shows on tape. He'll also have an opportunity to show teams he moves well enough in space and line up as a 3-4 OLB during position-specific drills.

David Njoku, TE, Miami

Njoku is an explosive pass-catching tight end who possesses rare run-after-the-catch ability on tape. A former high school high jump champion (7 feet, 1 inch is his personal best), he is expected to check in at around 6-4 and 240 pounds, clock in the 4.5's with the 40-yard dash and jump through the roof during the on-field testing. Njoku is one of the youngest players in the class -- he turns 21 in May -- and still needs some polishing as a route runner and can improve as a blocker. However, he carries one of the highest ceilings of any 2017 prospect and will have a chance to help his cause as a potential first-round pick if he can deliver on the type of workout he is expected to have in Indianapolis.

Obi Melifonwu, S, Connecticut

Melifonwu will look to continue to take advantage of the postseason process by building off a strong Senior Bowl performance. At 6-foot-4 and 219 pounds, he was one of the best in show during the weigh-ins in Mobile, Alabama, with a frame comparable to Seahawks safety Kam Chancellor. Melifonwu is an explosive athlete who is expected to post impressive test numbers, including reports that he could run in the 4.4 range with his 40-yard dash. The former cornerback has a chance to prove he is more than just a box safety at the next level and solidify a Day 2 grade.

Adoree' Jackson, CB, USC

An All-American track star at USC, Jackson's career best in the 100 meters is an impressive 10.38 seconds, and he's a candidate to run the fastest 40-yard dash. It's also worth noting he won the Pac-12 long jump title in 2016. Obviously there's no running start for the broad jump, but it gauges a player's explosiveness, and there's no shortage of burst on tape for Jackson. He's a quick-twitch athlete who explodes out of his pedal and closes quickly when the ball is in the air. Finally, Jackson has long been expected to shine during workouts, so a strong performance will check the boxes more than it will help him. Impressing teams during interviews, on the other hand, would give his stock a boost.

Leonard Fournette, RB, LSU

Fournette's decision to sit out LSU's bowl game to prep for the combine means he should be in excellent shape and well-prepared to put on a show, starting with the 40-yard dash. Listed at 6-foot-1 and 235 pounds, he may have shed some weight to help boost his speed, so it will be interesting to see his current weight. With the weight in mind, Fournette is expected to run in the low 4.4s or 4.3s, and keep in mind that 213 pounds is the average weight for running back prospects at the past five combines. For a little perspective from a physical standpoint, Ezekiel Elliott ran a 4.47 at 225 pounds last year. Also, the medical checkup will be critical for Fournette considering teams want to make sure the ankle injury that slowed him last season is not a long-term issue. In addition, keep an eye on how well he catches the ball during position-specific drills.

Marlon Humphrey, CB, Alabama

Humphrey was a sprinter and hurdler on the Alabama track team while redshirting for the football team in 2014 and is expected to open eyes during the on-field testing and drill work. He is one of the more polarizing prospects among inner scouting circles. On one hand, he is a big and physical cornerback -- expected to measure in around 6-foot-1 and 200 pounds -- with quality size and speed for his size. However, Humphrey didn't always play to his measureables on tape, particularly locating and defending the ball in contested situations. That said, verifying his size, putting up big test numbers and showing solid tracking and playing the ball during the drill portion of the workout will go a long way in helping make the argument that he's a potential top-40 prospect when teams set their final boards.

Josh Jones, S, NC State

Jones has recently created some buzz as teams started to get into their full underclassman evaluations after the bowl season. Listed at 6-foot-1 and 215 pounds, he is a versatile and physical safety who has an explosive burst that can be viewed on the Louisville tape, in which he runs down QB Lamar Jackson from across the field. Jones has drawn comparisons to T.J. Greene (the Colts' second-round pick in 2016) who ran in the mid 4.3's and recorded a vertical jump of 35.5 inches and a broad jump of 10 feet, 9 inches last year. If Jones can post similar numbers, he has a chance to be one of the bigger winners coming out of Indianapolis and potentially get into the second-round range in what is shaping up to be a deep safety class.

Takk McKinley, DE, UCLA

A track star who made it to the California state meets in the 100- and 200-meter events his junior and senior seasons of high school, McKinley once ran the 100 in 10.58 seconds, and he remains fast despite adding weight. In fact, he ran a 4.52 40 at 245 pounds in the spring of 2016, and that closing speed regularly shows up on tape. In addition, McKinley recently posted on Twitter a video of himself benching 230 pounds 24 times, which is an impressive feat considering he has 34-inch arms and he's expected to undergo shoulder surgery following the combine. Like Garrett, McKinley will have an opportunity to show teams what he can do in space during position-specific drills, and like Fournette, the medical exam is that much more important.

Taywan Taylor, WR, Western Kentucky

There are a couple of receivers to consider here in Washington's John Ross and Louisiana Tech's Carlos Henderson, who are both candidates to run sub-4.4s in the 40-yard dash. Plus, Taylor measured 5-foot-11 and 198 pounds at the Senior Bowl, so he doesn't have a great frame. However, Taylor has an above-average catching radius for his size with his arm length (32 3/8 inches) and he's expected to record a vertical jump close to 40 inches. Finally, Taylor's explosive burst is one of his best traits on tape; look for that explosiveness to show up in the broad jump in which he could jump in the same range as Julio Jones (11 feet, 3 inches) did in 2011.

Charles Harris, OLB, Missouri

Harris ended the 2016 season with a career-high nine sacks, including 5.5 over his final four games. A former high school basketball standout, scouts are anticipating the explosiveness Harris shows on tape to translate to the on-field testing portion, particularly with his jumps and 10-yard split. Harris has room to add bulk and get stronger, and recording a solid number in the bench test would help his cause as well. It is a deep edge-rusher class, and Harris will have a chance to gain some momentum with a strong showing that could propel him into the back half of the first-round range.