Personal life aside, "The Juice" could run the ball. Only playing 11 seasons, O.J. racked up 11,236 yards and a very good 4.7 yds/carry throughout his career. He currently resides in 18th place on the all time rushing yards list.

O.J. only finished with 75 total touchdowns, but was the first player in NFL history to run for more than 2000 yards in a season, accomplishing the feat in a 14 game season.

He was the league's rushing leader four times and was a six time Pro-bowler. Of course, O.J.'s off-the-field trouble will tarnish a very impressive NFL career.

It was a toss up between Earl Campbell and Gale Sayers for this spot. Both had short, but very good careers. The ultimate power back, Campbell, at 5'11" and almost 250 pounds was a fearsome combination of speed and brutality.

He shredded defensive lines, using his massive legs to drive right through anyone foolish enough to get in his way. He was Jerome Bettis before Jerome Bettis.

His bruising style, unfortunately, wore his body out after only eight grueling seasons, but during the prime of career he was as dominant a running back as ever played the game of football.

Only ranking 27th on the all time rushing yards list with 9,407 yards, Earl Campbell is truly undervalued and would have been much higher on this list had Bum Phillips not worn him out in eight seasons.

Marcus Allen played brilliantly for 16 season and was one of the best goal-line backs the NFL has ever seen. He currently ranks 10th on the all time rushing list with 12,243 yards and ranks third overall with 144 overall touchdowns.

He added 587 receptions for 5,411 yards.

He was also a fairly good passer for a running back, completing 12 of 27 passes for 285 yards and 6 touchdowns, with only 1 interception. Allen was the first player ever to gain more than 10,000 rushing yards and 5,000 receiving yards during his career.

Allen only had a 4.1 yds/carry career mark, which is why he only comes in at No. 8.

Known as the other LT, Tomlinson will probably be ranked much higher on this list by the time his career is done. First, here are some of his many NFL records: Holds the all-time NFL record for single season touchdowns (31).

Holds the all-time NFL record for single season rushing touchdowns (28). Holds the all-time NFL record for the most points scored in a single season (186).

Holds the all-time NFL record for most consecutive games with a rushing touchdown (18). In 2003, he became the first player in NFL history to rush for 1,000 yards and record 100 receptions in the same season.

LT already ranks 14th on the all time rushing list and after another 1,000-yd season next year, will jump up around seventh all time.

Dickerson wasted no time showing the world how good he was, with over 1,800 yards and 18 rushing touchdowns in his rookie season. In his second season, he rushed for 100 yards on 11 occasions, breaking OJ Simpson's record of 10.

In that same year he rushed for 2,105 yards, beating another of Simpson's records for yards in a single season. Dickerson became the seventh back to gain more than 10,000 yards and the fastest ever to do so, reaching the milestone in just 91 games.

During his 11-year career, Dickerson gained 13,259 yards rushing, which was second all-time at the time of his retirement, and rushed for 90 touchdowns. He gained another 2,137 yards and six touchdowns on 281 pass receptions.

After three years with the Colts, Faulk was traded to St. Louis. In this offense he put up some of the best all-purpose numbers in the history of the NFL.

Faulk's patience and diligence in learning the Rams' offense paid off when he totaled an NFL record 2,429 yards from scrimmage, eclipsing Barry Sanders' record of 2,358 yards set in 1997.

With 1,381 yards rushing (5.5 yards-per-carry average), 1,048 receiving yards, and scoring 12 touchdowns, Faulk joined Roger Craig as the only men to total 1,000+ yards in each category in a season.

In one of the most prolific performances of his entire career, he ran all over the University of the Pacific in just his second collegiate game. In 37 carries, he racked up 386 yards and scored seven touchdowns, both NCAA records for freshmen.

He ranks sixth on the list for most TDs scored overall, and has 19,154 total yards in his career.

A superstar from the moment he turned pro, Payton's durability was legendary. Despite taking the brutal pounding that any running back can expect to face, Payton managed to miss only a single game in his 13 year career.

With more than 16,000 rushing yards and 110 rushing touchdowns, his numbers made his Hall of Fame induction a guarantee.

Over his entire career, Payton rushed for 16,726 yards (second overall) and scored 110 touchdowns. Also, he caught 492 passes for 4,538 yards and 15 touchdowns.

Payton set several team records, including most career rushing yards, receptions, and touchdowns. His jersey number was retired by the Bears, and he was inducted into the Pro Football Hall of Fame in 1993.

The only game he missed in his 13-year career came in his rookie season of 1975.

Emmitt Smith currently holds the NFL record in career rushing yards with 18,355, breaking the previous record held by Walter Payton.

He leads all running backs with 164 career rushing touchdowns, and his 175 total touchdowns ranks him second only to Jerry Rice's 207 touchdowns.

The sum of his rushing yards, receiving yards (3,224) gave him a total of 21,564 yards from the line of scrimmage, making him one of only four players in NFL history to eclipse the 21,000-combined yards mark.

Emmitt Smith is the only running back to ever have won a Super Bowl championship, the NFL Most Valuable Player award, the NFL rushing crown, and the Super Bowl Most Valuable Player award all in the same season (1993).

Running behind one of the best offensive lines ever assembled and longevity led to his record setting career. His career 4.2 yards/carry is why he is ranked No. 3 on this list.

He departed as the NFL record holder for both single-season (1,863 in 1963) and career rushing (12,312 yards), as well as the all-time leader in rushing touchdowns (106), total touchdowns (126), and all-purpose yards (15,549).

He was the first player ever to reach the 100-rushing-touchdowns milestone, and only a few others have done so since, despite the league's expansion to a 16-game season in 1978 (Brown's first four seasons were only 12 games, and his last five were 14 games).

Brown also set a record by reaching the 100-touchdown milestone in only 93 games, which stood until LaDainian Tomlinson reached it in 89 games during the 2006 season.

Jim Brown is the only rusher in NFL history to average over 100 yards per game for a career. Brown was also a superb receiver out of the backfield, catching 262 passes for 2,499 yards and 20 touchdowns.

Every season he played, Brown was voted into the Pro Bowl, and he left the league in style by scoring three touchdowns in his final Pro Bowl game.

Perhaps the most amazing feat is that Jim Brown accomplished these records despite never playing past 29 years of age.

If greatness is measured by unparalleled skill on the football field, then the best running back of all time is Barry Sanders.

The 5' 8" Sanders, who holds the college football record for most rushing yards gained in a season, was a highly gifted and instinctive runner whose performance sometimes defied description.

This former Heisman trophy winner was a prolific rusher who gained 15,269 yards during his career. Had he not decided to cut his career short for personal reasons, it is a safe bet that Sanders, not Smith, would be ranked first in career rushing yards.

Unlike Smith who played most of his career on championship-caliber teams, Sanders' career was spent with the lowly, and often one dimensional Detroit Lions. Still, this skilled runner chalked up 10 Pro Bowl appearances and was NFL MVP in 1997 when he led the league in rushing with 2,051 yards.

Sportswriter Paul Zimmerman wrote that, "Nobody has ever created such turmoil at the point of attack as Sanders has," a high tribute for this one of a kind runner.

A case could be made that if Barry Sanders had played on the '90s Cowboys instead of the lowly Lions, he would have set records that would never be touched in yardage, touchdowns, and yards/carry.

Congratulations Mr. Sanders...you are the best running back in the history of the league.