Roosevelt Nix

Nix was released by the Steelers on March 18, 2020.

Nix signed with the Indianapolis Colts on April 11, 2020.

On September 2, 2019, Nix was voted as a first-time Steelers' Special Teams Captain by his teammates. He was placed on injured reserve on November 14, 2019. He was designated for return from injured reserve on December 26, 2019, and began practicing with the team again, but was not activated as the Steelers failed to make the playoffs.

On February 10, 2018, Nix signed a four-year contract extension with the Steelers. On December 23, 2018, Nix briefly became the subject of ridicule for celebrating what he thought was a fourth down conversion on a fake punt against the New Orleans Saints when in actuality he was stopped a yard short.

On January 26, 2017, the Steelers re-signed Nix to a one-year, $615,000 contract.

He was the only fullback on the roster throughout training camp, making him their de facto starter to begin the regular season. On December 10, 2017, Nix scored his first career touchdown on a one-yard pass by Ben Roethlisberger in the fourth quarter of a 39-38 comeback victory over the Baltimore Ravens. On December 25, 2017, Nix scored his first career rushing touchdown with a one-yard run against the Houston Texans in the second quarter. On January 22, 2018, he was named to his first Pro Bowl as a replacement for the Super Bowl-bound James Develin.

On January 19, 2016, he was signed to a one-year, $525,000 contract extension.

During the 2015-2016 offseason, former starting fullback Will Johnson left via free agency to join the New York Giants. The Steelers named Nix the de facto starter at fullback going into the 2016 regular season. Nix was unable to appear in the first five games due to a back injury he suffered prior to the season-opener. On October 16, 2016, he appeared in his first game of the season during the Steelers' 30-15 loss to the Miami Dolphins. Nix made his first start of the season during a Week 11 victory over the Cleveland Browns. On January 1, 2017, he made his first two receptions for five receiving yards in a 27-24 overtime win over the Cleveland Browns. He finished his second season with two starts in ten games recording two catches for five yards.

On January 9, 2015, the Pittsburgh Steelers signed Nix to a one-year, $435,000 reserve/futures contract, reuniting him with former Kent State teammate Dri Archer. He originally was signed as an inside linebacker but with too much depth at the position he was again switched to fullback. With the Steelers' history of not typically using fullbacks under offensive coordinator Todd Haley and former coordinator Bruce Arians, Nix's best chance of keeping a position was a roster was to excel on special teams. During the pre-season, he made notable plays on special teams, including a blocked kick.

On September 5, 2015, Nix made the regular season roster and was slated to be the backup to veteran Will Johnson. On October 18, 2015, he made his first career start during the Steelers' 25-14 victory over the Arizona Cardinals. He finished his first season appearing in 15 games with four starts. His first forced fumble was during Week 9 of the 2015 NFL season, on special teams, when the Steelers hosted the Oakland Raiders. For the season, he recorded two receptions for 11 yards, and seven special teams tackles. Nix was unfortunately unable to finish the season due to a foot injury.

On May 10, 2014, the Atlanta Falcons signed Nix to a three-year, $1.54 million contract after he went undrafted in the 2014 NFL Draft. He appeared on Hard Knocks with the Falcons. To have a better opportunity to make the 53-man roster, Nix switched positions from linebacker to fullback but was eventually released by the Falcons on August 3, 2014.

Nix was assigned to the Cleveland Gladiators of the Arena Football League (AFL) on October 9, 2014. He was placed on Other League Exempt by the team on January 5, 2015.

With a 5–7 finish in Nix's freshman year, Kent State chose to hire Darrell Hazell to replace Martin as Kent State's head coach for 2011. In the season opener, Nix recorded six tackles, two tackles-for-loss, and a sack against #2 Alabama. On September 29, he forced a fumble that led to the game-winning touchdown in a victory against FCS South Alabama. While playing Northern Illinois, he finished the game with four tackles, two tackles-for-loss, and a forced fumble. In a week 11 contest against Akron, he had a career-high six tackles, 1.5 tackles-for-loss, and two pass break ups in a performance that won him MAC East Defensive Player of the Week. He ended his first season under Hazell, being voted to first-team All-MAC for the second consecutive year and finishing with 39 tackles (25 solo), 4.5 sacks, three forced fumbles, and led Kent State with 17 tackles for a loss.

Nix was voted as a team captain by his coaches and teammates and opened his junior season with eight tackles, four tackles-for-loss, and a sack against #7 FCS Towson. In Week 4, he recorded five solo tackles, two tackles-for-loss, a sack, and a forced fumble in a 45–43 victory over Ball State. On October 13, in a victory over Army, he recorded five tackles, two tackles-for-loss, and a sack. On November 30, he finished with a total of five tackles and a sack in an overtime loss to Northern Illinois. The Golden Flashes finished their season with a loss to Arkansas State in the 2013 GoDaddy.com Bowl and with a record of 11–3. Nix ended his junior season with 59 tackles (36 solo), 15 tackles for loss, six sacks, and three forced fumbles while also being voted first-team All-MAC by Phil Steele in recognition of his successful season.

Nix attended Reynoldsburg High School. He was named OCC player of the year while earning second team all-state, first team All-district, All-metro, and OCC honors his senior year. He played for Ohio in the 2010 Big 33 Classic and was also selected to play in the Ohio North-South All-Star game. Nix recorded 84 tackles and eight sacks as a junior, garnering second team All-state, All-conference, first-team All-district, Super 25, and first team OCC recognition. He also lettered in wrestling.

Roosevelt Delbert Nix-Jones (born March 30, 1992) is an American football fullback for the Indianapolis Colts of the National Football League (NFL) . He played college football at Kent State University, and was signed by the Atlanta Falcons after going undrafted in the 2014 NFL Draft. As a member of the Pittsburgh Steelers, Nix made the 2018 Pro Bowl.

Nix-Jones was born on March 30, 1992 in Reynoldsburg, Ohio to Lisa and Roosevelt Nix. His stepfather's name is Johnny Jones. He has two younger siblings, Keela and Jalen Jones. During her time in college, his mother, Lisa, was a standout softball player at Bowling Green.